diff --git a/spine-libgdx/build.gradle b/spine-libgdx/build.gradle
index 3babace20..50d66d31a 100644
--- a/spine-libgdx/build.gradle
+++ b/spine-libgdx/build.gradle
@@ -1,56 +1,51 @@
-group = "com.esotericsoftware.spine"
-version = "4.0.58.1"
+apply plugin: "java"
+apply plugin: "maven-publish"
+
+group = "com.github.EsotericSoftware"
+version = "4.0"
 
 ext {
-    libgdxVersion = "1.10.1-SNAPSHOT"
-    javaVersion = 8
+    libgdxVersion = "1.10.0"
 }
 
-allprojects {
-    repositories {
-        mavenLocal()
-        maven { url "https://oss.sonatype.org/content/repositories/snapshots" }
-        mavenCentral()
+sourceSets.main.java.srcDirs = ["spine-libgdx/src"]
+sourceSets.test.java.srcDirs = ["spine-libgdx-tests/src"]
+
+repositories {
+    maven {
+        url "https://oss.sonatype.org/content/repositories/snapshots"
     }
+    mavenCentral()
 }
 
-project("spine-libgdx") {
-    apply plugin: "java"
-    sourceSets.main.java.srcDirs = ["src"]
+dependencies {
+    implementation "com.badlogicgames.gdx:gdx:$libgdxVersion"
+
+    testImplementation "com.badlogicgames.gdx:gdx:$libgdxVersion"
+    testImplementation "com.badlogicgames.gdx:gdx-backend-lwjgl:$libgdxVersion"
+    testImplementation "com.badlogicgames.gdx:gdx-platform:$libgdxVersion:natives-desktop"
+    testImplementation "com.badlogicgames.gdx:gdx-box2d:$libgdxVersion"
+    testImplementation "com.badlogicgames.gdx:gdx-box2d-platform:$libgdxVersion:natives-desktop"
 
-    dependencies {
-        implementation "com.badlogicgames.gdx:gdx:$libgdxVersion"
-    }
 }
 
-project("spine-libgdx-tests") {
-    apply plugin: "java"
-    sourceSets.main.java.srcDirs = ["src"]
-    sourceSets.main.resources.srcDirs = ["assets"]
+task myJavadocs(type: Javadoc) {
+    source = sourceSets.main.allJava
+    javadoc.options.addStringOption('Xdoclint:none', '-quiet')
 
-    dependencies {
-        implementation  project(":spine-libgdx")
-        implementation "com.badlogicgames.gdx:gdx:$libgdxVersion"
-        implementation "com.badlogicgames.gdx:gdx-platform:$libgdxVersion:natives-desktop"
-        implementation "com.badlogicgames.gdx:gdx-backend-lwjgl3:$libgdxVersion"
-        implementation "com.badlogicgames.gdx:gdx-lwjgl3-glfw-awt-macos:$libgdxVersion"
-        implementation "com.badlogicgames.gdx:gdx-box2d:$libgdxVersion"
-        implementation "com.badlogicgames.gdx:gdx-box2d-platform:$libgdxVersion:natives-desktop"
-    }
 }
 
-project("spine-skeletonviewer") {
-    apply plugin: "java"
-    sourceSets.main.java.srcDirs = ["src"]
-    sourceSets.main.resources.srcDirs = ["assets"]
+task sourcesJar(type: Jar, dependsOn: classes) {
+    classifier = 'sources'
+    from sourceSets.main.allSource
+}
 
-    dependencies {
-        implementation  project(":spine-libgdx")
-        implementation "com.badlogicgames.gdx:gdx:$libgdxVersion"
-        implementation "com.badlogicgames.gdx:gdx-platform:$libgdxVersion:natives-desktop"
-        implementation "com.badlogicgames.gdx:gdx-backend-lwjgl3:$libgdxVersion"
-        implementation "com.badlogicgames.gdx:gdx-lwjgl3-glfw-awt-macos:$libgdxVersion"
-        implementation "com.badlogicgames.gdx:gdx-box2d:$libgdxVersion"
-        implementation "com.badlogicgames.gdx:gdx-box2d-platform:$libgdxVersion:natives-desktop"
-    }
-}
\ No newline at end of file
+task javadocJar(type: Jar, dependsOn: javadoc) {
+    classifier = 'javadoc'
+    from javadoc.destinationDir
+}
+
+artifacts {
+    archives sourcesJar
+    archives javadocJar
+}
diff --git a/spine-libgdx/gradle/wrapper/gradle-wrapper.jar b/spine-libgdx/gradle/wrapper/gradle-wrapper.jar
deleted file mode 100644
index 7454180f2..000000000
Binary files a/spine-libgdx/gradle/wrapper/gradle-wrapper.jar and /dev/null differ
diff --git a/spine-libgdx/gradle/wrapper/gradle-wrapper.properties b/spine-libgdx/gradle/wrapper/gradle-wrapper.properties
deleted file mode 100644
index 2e6e5897b..000000000
--- a/spine-libgdx/gradle/wrapper/gradle-wrapper.properties
+++ /dev/null
@@ -1,5 +0,0 @@
-distributionBase=GRADLE_USER_HOME
-distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.3-bin.zip
-zipStoreBase=GRADLE_USER_HOME
-zipStorePath=wrapper/dists
diff --git a/spine-libgdx/gradlew b/spine-libgdx/gradlew
deleted file mode 100755
index 744e882ed..000000000
--- a/spine-libgdx/gradlew
+++ /dev/null
@@ -1,185 +0,0 @@
-#!/usr/bin/env sh
-
-#
-# Copyright 2015 the original author or authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      https://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-##############################################################################
-##
-##  Gradle start up script for UN*X
-##
-##############################################################################
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >/dev/null
-APP_HOME="`pwd -P`"
-cd "$SAVED" >/dev/null
-
-APP_NAME="Gradle"
-APP_BASE_NAME=`basename "$0"`
-
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
-
-# Use the maximum available, or set MAX_FD != -1 to use that value.
-MAX_FD="maximum"
-
-warn () {
-    echo "$*"
-}
-
-die () {
-    echo
-    echo "$*"
-    echo
-    exit 1
-}
-
-# OS specific support (must be 'true' or 'false').
-cygwin=false
-msys=false
-darwin=false
-nonstop=false
-case "`uname`" in
-  CYGWIN* )
-    cygwin=true
-    ;;
-  Darwin* )
-    darwin=true
-    ;;
-  MSYS* | MINGW* )
-    msys=true
-    ;;
-  NONSTOP* )
-    nonstop=true
-    ;;
-esac
-
-CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
-
-
-# Determine the Java command to use to start the JVM.
-if [ -n "$JAVA_HOME" ] ; then
-    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
-        # IBM's JDK on AIX uses strange locations for the executables
-        JAVACMD="$JAVA_HOME/jre/sh/java"
-    else
-        JAVACMD="$JAVA_HOME/bin/java"
-    fi
-    if [ ! -x "$JAVACMD" ] ; then
-        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
-
-Please set the JAVA_HOME variable in your environment to match the
-location of your Java installation."
-    fi
-else
-    JAVACMD="java"
-    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-
-Please set the JAVA_HOME variable in your environment to match the
-location of your Java installation."
-fi
-
-# Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
-    MAX_FD_LIMIT=`ulimit -H -n`
-    if [ $? -eq 0 ] ; then
-        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
-            MAX_FD="$MAX_FD_LIMIT"
-        fi
-        ulimit -n $MAX_FD
-        if [ $? -ne 0 ] ; then
-            warn "Could not set maximum file descriptor limit: $MAX_FD"
-        fi
-    else
-        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
-    fi
-fi
-
-# For Darwin, add options to specify how the application appears in the dock
-if $darwin; then
-    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
-fi
-
-# For Cygwin or MSYS, switch paths to Windows format before running java
-if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
-    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
-    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
-
-    JAVACMD=`cygpath --unix "$JAVACMD"`
-
-    # We build the pattern for arguments to be converted via cygpath
-    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
-    SEP=""
-    for dir in $ROOTDIRSRAW ; do
-        ROOTDIRS="$ROOTDIRS$SEP$dir"
-        SEP="|"
-    done
-    OURCYGPATTERN="(^($ROOTDIRS))"
-    # Add a user-defined pattern to the cygpath arguments
-    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
-        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
-    fi
-    # Now convert the arguments - kludge to limit ourselves to /bin/sh
-    i=0
-    for arg in "$@" ; do
-        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
-        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
-
-        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
-            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
-        else
-            eval `echo args$i`="\"$arg\""
-        fi
-        i=`expr $i + 1`
-    done
-    case $i in
-        0) set -- ;;
-        1) set -- "$args0" ;;
-        2) set -- "$args0" "$args1" ;;
-        3) set -- "$args0" "$args1" "$args2" ;;
-        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
-        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
-        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
-        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
-        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
-        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
-    esac
-fi
-
-# Escape application args
-save () {
-    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
-    echo " "
-}
-APP_ARGS=`save "$@"`
-
-# Collect all arguments for the java command, following the shell quoting and substitution rules
-eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
-
-exec "$JAVACMD" "$@"
diff --git a/spine-libgdx/gradlew.bat b/spine-libgdx/gradlew.bat
deleted file mode 100644
index 107acd32c..000000000
--- a/spine-libgdx/gradlew.bat
+++ /dev/null
@@ -1,89 +0,0 @@
-@rem
-@rem Copyright 2015 the original author or authors.
-@rem
-@rem Licensed under the Apache License, Version 2.0 (the "License");
-@rem you may not use this file except in compliance with the License.
-@rem You may obtain a copy of the License at
-@rem
-@rem      https://www.apache.org/licenses/LICENSE-2.0
-@rem
-@rem Unless required by applicable law or agreed to in writing, software
-@rem distributed under the License is distributed on an "AS IS" BASIS,
-@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-@rem See the License for the specific language governing permissions and
-@rem limitations under the License.
-@rem
-
-@if "%DEBUG%" == "" @echo off
-@rem ##########################################################################
-@rem
-@rem  Gradle startup script for Windows
-@rem
-@rem ##########################################################################
-
-@rem Set local scope for the variables with windows NT shell
-if "%OS%"=="Windows_NT" setlocal
-
-set DIRNAME=%~dp0
-if "%DIRNAME%" == "" set DIRNAME=.
-set APP_BASE_NAME=%~n0
-set APP_HOME=%DIRNAME%
-
-@rem Resolve any "." and ".." in APP_HOME to make it shorter.
-for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
-
-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
-
-@rem Find java.exe
-if defined JAVA_HOME goto findJavaFromJavaHome
-
-set JAVA_EXE=java.exe
-%JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto execute
-
-echo.
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
-
-goto fail
-
-:findJavaFromJavaHome
-set JAVA_HOME=%JAVA_HOME:"=%
-set JAVA_EXE=%JAVA_HOME%/bin/java.exe
-
-if exist "%JAVA_EXE%" goto execute
-
-echo.
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
-
-goto fail
-
-:execute
-@rem Setup the command line
-
-set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
-
-
-@rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
-
-:end
-@rem End local scope for the variables with windows NT shell
-if "%ERRORLEVEL%"=="0" goto mainEnd
-
-:fail
-rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
-rem the _cmd.exe /c_ return code!
-if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
-exit /b 1
-
-:mainEnd
-if "%OS%"=="Windows_NT" endlocal
-
-:omega
diff --git a/spine-libgdx/settings.gradle b/spine-libgdx/settings.gradle
deleted file mode 100644
index ea4eac376..000000000
--- a/spine-libgdx/settings.gradle
+++ /dev/null
@@ -1,6 +0,0 @@
-// includeBuild "../../libgdx"
-// rootProject.name = "spine-libgdx-parent"
-
-include ":spine-libgdx"
-include ":spine-libgdx-tests"
-include ":spine-skeletonviewer"
\ No newline at end of file
diff --git a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/AnimationStateTests.java b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/AnimationStateTests.java
index 15cbc844c..0ff92330d 100644
--- a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/AnimationStateTests.java
+++ b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/AnimationStateTests.java
@@ -33,7 +33,7 @@ import java.lang.reflect.Field;
 import java.util.concurrent.atomic.AtomicInteger;
 
 import com.badlogic.gdx.Files.FileType;
-import com.badlogic.gdx.backends.lwjgl3.Lwjgl3FileHandle;
+import com.badlogic.gdx.backends.lwjgl.LwjglFileHandle;
 import com.badlogic.gdx.math.MathUtils;
 import com.badlogic.gdx.utils.Array;
 import com.badlogic.gdx.utils.Pool;
@@ -134,7 +134,7 @@ public class AnimationStateTests {
 	int test;
 
 	AnimationStateTests () {
-		skeletonData = json.readSkeletonData(new Lwjgl3FileHandle("test/test.json", FileType.Internal));
+		skeletonData = json.readSkeletonData(new LwjglFileHandle("test/test.json", FileType.Internal));
 
 		TrackEntry entry;
 
diff --git a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/Box2DExample.java b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/Box2DExample.java
index 6236a9729..dd0c0034a 100644
--- a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/Box2DExample.java
+++ b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/Box2DExample.java
@@ -31,8 +31,8 @@ package com.esotericsoftware.spine;
 
 import com.badlogic.gdx.ApplicationAdapter;
 import com.badlogic.gdx.Gdx;
-import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
-import com.badlogic.gdx.backends.lwjgl3.Lwjgl3ApplicationConfiguration;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplicationConfiguration;
 import com.badlogic.gdx.graphics.OrthographicCamera;
 import com.badlogic.gdx.graphics.g2d.SpriteBatch;
 import com.badlogic.gdx.graphics.g2d.TextureAtlas;
@@ -240,9 +240,10 @@ public class Box2DExample extends ApplicationAdapter {
 	}
 
 	public static void main (String[] args) throws Exception {
-		Lwjgl3ApplicationConfiguration config = new Lwjgl3ApplicationConfiguration();
-		config.setTitle("Box2D - Spine");
-		config.setWindowedMode(800, 600);
-		new Lwjgl3Application(new Box2DExample(), config);
+		LwjglApplicationConfiguration config = new LwjglApplicationConfiguration();
+		config.title = "Box2D - Spine";
+		config.width = 640;
+		config.height = 480;
+		new LwjglApplication(new Box2DExample(), config);
 	}
 }
diff --git a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/FboTest.java b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/FboTest.java
index d01d124a0..8f266f529 100644
--- a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/FboTest.java
+++ b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/FboTest.java
@@ -4,7 +4,7 @@ package com.esotericsoftware.spine;
 import com.badlogic.gdx.ApplicationAdapter;
 import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.Input;
-import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
 import com.badlogic.gdx.graphics.Color;
 import com.badlogic.gdx.graphics.OrthographicCamera;
 import com.badlogic.gdx.graphics.Pixmap;
@@ -101,6 +101,6 @@ public class FboTest extends ApplicationAdapter {
 	}
 
 	static public void main (String[] args) throws Exception {
-		new Lwjgl3Application(new FboTest());
+		new LwjglApplication(new FboTest());
 	}
 }
diff --git a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/FrameByFrameTest.java b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/FrameByFrameTest.java
index 7cd7329bc..a4a38a711 100644
--- a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/FrameByFrameTest.java
+++ b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/FrameByFrameTest.java
@@ -31,7 +31,7 @@ package com.esotericsoftware.spine;
 
 import com.badlogic.gdx.ApplicationAdapter;
 import com.badlogic.gdx.Gdx;
-import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
 import com.badlogic.gdx.graphics.OrthographicCamera;
 import com.badlogic.gdx.graphics.g2d.Animation;
 import com.badlogic.gdx.graphics.g2d.Animation.PlayMode;
@@ -99,6 +99,6 @@ public class FrameByFrameTest extends ApplicationAdapter {
 	}
 
 	public static void main (String[] args) throws Exception {
-		new Lwjgl3Application(new FrameByFrameTest());
+		new LwjglApplication(new FrameByFrameTest());
 	}
 }
diff --git a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/IKTest.java b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/IKTest.java
index 8f4293d1e..529ac4aaa 100644
--- a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/IKTest.java
+++ b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/IKTest.java
@@ -31,7 +31,7 @@ package com.esotericsoftware.spine;
 
 import com.badlogic.gdx.ApplicationAdapter;
 import com.badlogic.gdx.Gdx;
-import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
 import com.badlogic.gdx.graphics.OrthographicCamera;
 import com.badlogic.gdx.graphics.g2d.TextureAtlas;
 import com.badlogic.gdx.math.Vector2;
@@ -145,6 +145,6 @@ public class IKTest extends ApplicationAdapter {
 	}
 
 	public static void main (String[] args) throws Exception {
-		new Lwjgl3Application(new IKTest());
+		new LwjglApplication(new IKTest());
 	}
 }
diff --git a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/MixTest.java b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/MixTest.java
index 275d82554..482f99cfb 100644
--- a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/MixTest.java
+++ b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/MixTest.java
@@ -31,7 +31,7 @@ package com.esotericsoftware.spine;
 
 import com.badlogic.gdx.ApplicationAdapter;
 import com.badlogic.gdx.Gdx;
-import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
 import com.badlogic.gdx.graphics.g2d.SpriteBatch;
 import com.badlogic.gdx.graphics.g2d.TextureAtlas;
 import com.badlogic.gdx.utils.Array;
@@ -140,6 +140,6 @@ public class MixTest extends ApplicationAdapter {
 	}
 
 	public static void main (String[] args) throws Exception {
-		new Lwjgl3Application(new MixTest());
+		new LwjglApplication(new MixTest());
 	}
 }
diff --git a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/NormalMapTest.java b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/NormalMapTest.java
index 056b2300b..300fe87f7 100644
--- a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/NormalMapTest.java
+++ b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/NormalMapTest.java
@@ -34,7 +34,7 @@ import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.InputAdapter;
 import com.badlogic.gdx.InputMultiplexer;
 import com.badlogic.gdx.Preferences;
-import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
 import com.badlogic.gdx.files.FileHandle;
 import com.badlogic.gdx.graphics.Texture;
 import com.badlogic.gdx.graphics.g2d.SpriteBatch;
@@ -379,6 +379,6 @@ public class NormalMapTest extends ApplicationAdapter {
 		else if (args.length == 1) //
 			args = new String[] {args[0], null};
 
-		new Lwjgl3Application(new NormalMapTest(args[0], args[1]));
+		new LwjglApplication(new NormalMapTest(args[0], args[1]));
 	}
 }
diff --git a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SimpleTest1.java b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SimpleTest1.java
index faa25032e..34ca75820 100644
--- a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SimpleTest1.java
+++ b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SimpleTest1.java
@@ -31,7 +31,7 @@ package com.esotericsoftware.spine;
 
 import com.badlogic.gdx.ApplicationAdapter;
 import com.badlogic.gdx.Gdx;
-import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
 import com.badlogic.gdx.graphics.GL20;
 import com.badlogic.gdx.graphics.OrthographicCamera;
 import com.badlogic.gdx.graphics.g2d.TextureAtlas;
@@ -106,6 +106,6 @@ public class SimpleTest1 extends ApplicationAdapter {
 	}
 
 	public static void main (String[] args) throws Exception {
-		new Lwjgl3Application(new SimpleTest1());
+		new LwjglApplication(new SimpleTest1());
 	}
 }
diff --git a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SimpleTest2.java b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SimpleTest2.java
index e6a292d11..e3eb4a0c2 100644
--- a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SimpleTest2.java
+++ b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SimpleTest2.java
@@ -32,7 +32,7 @@ package com.esotericsoftware.spine;
 import com.badlogic.gdx.ApplicationAdapter;
 import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.InputAdapter;
-import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
 import com.badlogic.gdx.graphics.Color;
 import com.badlogic.gdx.graphics.GL20;
 import com.badlogic.gdx.graphics.OrthographicCamera;
@@ -168,6 +168,6 @@ public class SimpleTest2 extends ApplicationAdapter {
 	}
 
 	public static void main (String[] args) throws Exception {
-		new Lwjgl3Application(new SimpleTest2());
+		new LwjglApplication(new SimpleTest2());
 	}
 }
diff --git a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SimpleTest3.java b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SimpleTest3.java
index 5570dcbf7..f658583e2 100644
--- a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SimpleTest3.java
+++ b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SimpleTest3.java
@@ -31,7 +31,7 @@ package com.esotericsoftware.spine;
 
 import com.badlogic.gdx.ApplicationAdapter;
 import com.badlogic.gdx.Gdx;
-import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
 import com.badlogic.gdx.graphics.OrthographicCamera;
 import com.badlogic.gdx.graphics.g2d.PolygonSpriteBatch;
 import com.badlogic.gdx.graphics.g2d.TextureAtlas;
@@ -106,6 +106,6 @@ public class SimpleTest3 extends ApplicationAdapter {
 	}
 
 	public static void main (String[] args) throws Exception {
-		new Lwjgl3Application(new SimpleTest3());
+		new LwjglApplication(new SimpleTest3());
 	}
 }
diff --git a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SimpleTest4.java b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SimpleTest4.java
index 1b883b8e7..2e35a579e 100644
--- a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SimpleTest4.java
+++ b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SimpleTest4.java
@@ -31,7 +31,7 @@ package com.esotericsoftware.spine;
 
 import com.badlogic.gdx.ApplicationAdapter;
 import com.badlogic.gdx.Gdx;
-import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
 import com.badlogic.gdx.graphics.OrthographicCamera;
 import com.badlogic.gdx.graphics.g2d.TextureAtlas;
 import com.badlogic.gdx.utils.ScreenUtils;
@@ -111,6 +111,6 @@ public class SimpleTest4 extends ApplicationAdapter {
 	}
 
 	public static void main (String[] args) throws Exception {
-		new Lwjgl3Application(new SimpleTest4());
+		new LwjglApplication(new SimpleTest4());
 	}
 }
diff --git a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SkeletonAssetManagerTest.java b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SkeletonAssetManagerTest.java
index 1ba210957..252753f32 100644
--- a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SkeletonAssetManagerTest.java
+++ b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SkeletonAssetManagerTest.java
@@ -32,7 +32,7 @@ package com.esotericsoftware.spine;
 import com.badlogic.gdx.ApplicationAdapter;
 import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.assets.AssetManager;
-import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
 import com.badlogic.gdx.graphics.OrthographicCamera;
 import com.badlogic.gdx.graphics.g2d.PolygonSpriteBatch;
 import com.badlogic.gdx.graphics.g2d.TextureAtlas;
@@ -125,6 +125,6 @@ public class SkeletonAssetManagerTest extends ApplicationAdapter {
 	}
 
 	public static void main (String[] args) throws Exception {
-		new Lwjgl3Application(new SkeletonAssetManagerTest());
+		new LwjglApplication(new SkeletonAssetManagerTest());
 	}
 }
diff --git a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SkeletonAttachmentTest.java b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SkeletonAttachmentTest.java
index f4fa2eb9f..70636fa60 100644
--- a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SkeletonAttachmentTest.java
+++ b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SkeletonAttachmentTest.java
@@ -31,7 +31,7 @@ package com.esotericsoftware.spine;
 
 import com.badlogic.gdx.ApplicationAdapter;
 import com.badlogic.gdx.Gdx;
-import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
 import com.badlogic.gdx.graphics.OrthographicCamera;
 import com.badlogic.gdx.graphics.g2d.PolygonSpriteBatch;
 import com.badlogic.gdx.graphics.g2d.TextureAtlas;
@@ -112,6 +112,6 @@ public class SkeletonAttachmentTest extends ApplicationAdapter {
 	}
 
 	public static void main (String[] args) throws Exception {
-		new Lwjgl3Application(new SkeletonAttachmentTest());
+		new LwjglApplication(new SkeletonAttachmentTest());
 	}
 }
diff --git a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SkinBonesMixAndMatchTest.java b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SkinBonesMixAndMatchTest.java
index 9c2efa2eb..510c5198a 100644
--- a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SkinBonesMixAndMatchTest.java
+++ b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SkinBonesMixAndMatchTest.java
@@ -31,7 +31,7 @@ package com.esotericsoftware.spine;
 
 import com.badlogic.gdx.ApplicationAdapter;
 import com.badlogic.gdx.Gdx;
-import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
 import com.badlogic.gdx.graphics.OrthographicCamera;
 import com.badlogic.gdx.graphics.g2d.PolygonSpriteBatch;
 import com.badlogic.gdx.graphics.g2d.TextureAtlas;
@@ -113,6 +113,6 @@ public class SkinBonesMixAndMatchTest extends ApplicationAdapter {
 	}
 
 	public static void main (String[] args) throws Exception {
-		new Lwjgl3Application(new SkinBonesMixAndMatchTest());
+		new LwjglApplication(new SkinBonesMixAndMatchTest());
 	}
 }
diff --git a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/TestHarness.java b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/TestHarness.java
index f2ae7709a..4542e0222 100644
--- a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/TestHarness.java
+++ b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/TestHarness.java
@@ -31,8 +31,7 @@ package com.esotericsoftware.spine;
 
 import com.badlogic.gdx.ApplicationAdapter;
 import com.badlogic.gdx.Gdx;
-import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
-import com.badlogic.gdx.backends.lwjgl3.Lwjgl3ApplicationConfiguration;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
 import com.badlogic.gdx.graphics.OrthographicCamera;
 import com.badlogic.gdx.graphics.g2d.PolygonSpriteBatch;
 import com.badlogic.gdx.graphics.g2d.TextureAtlas;
@@ -123,8 +122,6 @@ public class TestHarness extends ApplicationAdapter {
 	}
 
 	public static void main (String[] args) throws Exception {
-		Lwjgl3ApplicationConfiguration config = new Lwjgl3ApplicationConfiguration();
-		config.setWindowedMode(640, 640);
-		new Lwjgl3Application(new TestHarness(), config);
+		new LwjglApplication(new TestHarness(), "", 640, 640);
 	}
 }
diff --git a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/VertexEffectTest.java b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/VertexEffectTest.java
index 01ef9819a..b4f43eb42 100644
--- a/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/VertexEffectTest.java
+++ b/spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/VertexEffectTest.java
@@ -31,8 +31,8 @@ package com.esotericsoftware.spine;
 
 import com.badlogic.gdx.ApplicationAdapter;
 import com.badlogic.gdx.Gdx;
-import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
-import com.badlogic.gdx.backends.lwjgl3.Lwjgl3ApplicationConfiguration;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplicationConfiguration;
 import com.badlogic.gdx.graphics.OrthographicCamera;
 import com.badlogic.gdx.graphics.g2d.PolygonSpriteBatch;
 import com.badlogic.gdx.graphics.g2d.TextureAtlas;
@@ -116,8 +116,9 @@ public class VertexEffectTest extends ApplicationAdapter {
 	}
 
 	public static void main (String[] args) throws Exception {
-		Lwjgl3ApplicationConfiguration config = new Lwjgl3ApplicationConfiguration();
-		config.setWindowedMode(800, 600);
-		new Lwjgl3Application(new VertexEffectTest(), config);
+		LwjglApplicationConfiguration config = new LwjglApplicationConfiguration();
+		config.width = 800;
+		config.height = 600;
+		new LwjglApplication(new VertexEffectTest(), config);
 	}
 }
diff --git a/spine-libgdx/spine-skeletonviewer/src/com/esotericsoftware/spine/SkeletonViewer.java b/spine-libgdx/spine-skeletonviewer/src/com/esotericsoftware/spine/SkeletonViewer.java
index 45b2f9383..6225ef9e6 100644
--- a/spine-libgdx/spine-skeletonviewer/src/com/esotericsoftware/spine/SkeletonViewer.java
+++ b/spine-libgdx/spine-skeletonviewer/src/com/esotericsoftware/spine/SkeletonViewer.java
@@ -35,8 +35,8 @@ import java.lang.reflect.Field;
 import com.badlogic.gdx.ApplicationAdapter;
 import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.Preferences;
-import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
-import com.badlogic.gdx.backends.lwjgl3.Lwjgl3ApplicationConfiguration;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplicationConfiguration;
 import com.badlogic.gdx.files.FileHandle;
 import com.badlogic.gdx.graphics.Color;
 import com.badlogic.gdx.graphics.GL20;
@@ -369,11 +369,13 @@ public class SkeletonViewer extends ApplicationAdapter {
 		}
 		if (dpiScale >= 2.0f) uiScale = 2;
 
-		Lwjgl3ApplicationConfiguration config = new Lwjgl3ApplicationConfiguration();
-		config.disableAudio(true);
-		config.setWindowedMode((int)(800 * uiScale), (int)(600 * uiScale));
-		config.setTitle("Skeleton Viewer");
-		config.setBackBufferConfig(8, 8, 8, 8, 24, 0, 2);
-		new Lwjgl3Application(new SkeletonViewer(), config);
+		LwjglApplicationConfiguration.disableAudio = true;
+		LwjglApplicationConfiguration config = new LwjglApplicationConfiguration();
+		config.width = (int)(800 * uiScale);
+		config.height = (int)(600 * uiScale);
+		config.title = "Skeleton Viewer";
+		config.allowSoftwareMode = true;
+		config.samples = 2;
+		new LwjglApplication(new SkeletonViewer(), config);
 	}
 }