diff --git a/spine-libgdx/build.gradle b/spine-libgdx/build.gradle
index 36fefe387..3babace20 100644
--- a/spine-libgdx/build.gradle
+++ b/spine-libgdx/build.gradle
@@ -1,51 +1,56 @@
-apply plugin: "maven-publish"
-apply plugin: "java"
-
-group = "com.github.EsotericSoftware"
-version = "4.1"
+group = "com.esotericsoftware.spine"
+version = "4.0.58.1"
 
 ext {
-    libgdxVersion = "1.10.0"
+    libgdxVersion = "1.10.1-SNAPSHOT"
+    javaVersion = 8
 }
 
-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"
+allprojects {
+    repositories {
+        mavenLocal()
+        maven { url "https://oss.sonatype.org/content/repositories/snapshots" }
+        mavenCentral()
     }
-    mavenCentral()
 }
 
-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"
+project("spine-libgdx") {
+    apply plugin: "java"
+    sourceSets.main.java.srcDirs = ["src"]
 
+    dependencies {
+        implementation "com.badlogicgames.gdx:gdx:$libgdxVersion"
+    }
 }
 
-task myJavadocs(type: Javadoc) {
-    source = sourceSets.main.allJava
-    javadoc.options.addStringOption('Xdoclint:none', '-quiet')
+project("spine-libgdx-tests") {
+    apply plugin: "java"
+    sourceSets.main.java.srcDirs = ["src"]
+    sourceSets.main.resources.srcDirs = ["assets"]
 
+    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"
+    }
 }
 
-task sourcesJar(type: Jar, dependsOn: classes) {
-    classifier = 'sources'
-    from sourceSets.main.allSource
-}
+project("spine-skeletonviewer") {
+    apply plugin: "java"
+    sourceSets.main.java.srcDirs = ["src"]
+    sourceSets.main.resources.srcDirs = ["assets"]
 
-task javadocJar(type: Jar, dependsOn: javadoc) {
-    classifier = 'javadoc'
-    from javadoc.destinationDir
-}
-
-artifacts {
-    archives sourcesJar
-    archives javadocJar
-}
+    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
diff --git a/spine-libgdx/gradle/wrapper/gradle-wrapper.jar b/spine-libgdx/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 000000000..7454180f2
Binary files /dev/null and b/spine-libgdx/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/spine-libgdx/gradle/wrapper/gradle-wrapper.properties b/spine-libgdx/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 000000000..2e6e5897b
--- /dev/null
+++ b/spine-libgdx/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+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
new file mode 100755
index 000000000..744e882ed
--- /dev/null
+++ b/spine-libgdx/gradlew
@@ -0,0 +1,185 @@
+#!/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
new file mode 100644
index 000000000..107acd32c
--- /dev/null
+++ b/spine-libgdx/gradlew.bat
@@ -0,0 +1,89 @@
+@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
new file mode 100644
index 000000000..ea4eac376
--- /dev/null
+++ b/spine-libgdx/settings.gradle
@@ -0,0 +1,6 @@
+// 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 4df486d51..2109b4dad 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.lwjgl.LwjglFileHandle;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3FileHandle;
 import com.badlogic.gdx.math.MathUtils;
 import com.badlogic.gdx.utils.Array;
 import com.badlogic.gdx.utils.Null;
@@ -136,7 +136,7 @@ public class AnimationStateTests {
 	int test;
 
 	AnimationStateTests () {
-		skeletonData = json.readSkeletonData(new LwjglFileHandle("test/test.json", FileType.Internal));
+		skeletonData = json.readSkeletonData(new Lwjgl3FileHandle("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 a32408a2a..b0d9e831b 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.lwjgl.LwjglApplication;
-import com.badlogic.gdx.backends.lwjgl.LwjglApplicationConfiguration;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3ApplicationConfiguration;
 import com.badlogic.gdx.graphics.OrthographicCamera;
 import com.badlogic.gdx.graphics.g2d.SpriteBatch;
 import com.badlogic.gdx.graphics.g2d.TextureAtlas;
@@ -242,10 +242,9 @@ public class Box2DExample extends ApplicationAdapter {
 	}
 
 	public static void main (String[] args) throws Exception {
-		LwjglApplicationConfiguration config = new LwjglApplicationConfiguration();
-		config.title = "Box2D - Spine";
-		config.width = 640;
-		config.height = 480;
-		new LwjglApplication(new Box2DExample(), config);
+		Lwjgl3ApplicationConfiguration config = new Lwjgl3ApplicationConfiguration();
+		config.setTitle("Box2D - Spine");
+		config.setWindowedMode(800, 600);
+		new Lwjgl3Application(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 f73c2ca62..eb17d3a74 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
@@ -32,7 +32,7 @@ package com.esotericsoftware.spine;
 import com.badlogic.gdx.ApplicationAdapter;
 import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.Input;
-import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
 import com.badlogic.gdx.graphics.Color;
 import com.badlogic.gdx.graphics.OrthographicCamera;
 import com.badlogic.gdx.graphics.Pixmap;
@@ -129,6 +129,6 @@ public class FboTest extends ApplicationAdapter {
 	}
 
 	static public void main (String[] args) throws Exception {
-		new LwjglApplication(new FboTest());
+		new Lwjgl3Application(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 c839736e5..958d36fbd 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.lwjgl.LwjglApplication;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
 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 LwjglApplication(new FrameByFrameTest());
+		new Lwjgl3Application(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 5111eb62e..8ab2e50ad 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.lwjgl.LwjglApplication;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
 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 LwjglApplication(new IKTest());
+		new Lwjgl3Application(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 cee706c5a..ef663cd78 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.lwjgl.LwjglApplication;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
 import com.badlogic.gdx.graphics.g2d.SpriteBatch;
 import com.badlogic.gdx.graphics.g2d.TextureAtlas;
 import com.badlogic.gdx.utils.Array;
@@ -139,6 +139,6 @@ public class MixTest extends ApplicationAdapter {
 	}
 
 	public static void main (String[] args) throws Exception {
-		new LwjglApplication(new MixTest());
+		new Lwjgl3Application(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 900018b67..ba59dc774 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.lwjgl.LwjglApplication;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
 import com.badlogic.gdx.files.FileHandle;
 import com.badlogic.gdx.graphics.Texture;
 import com.badlogic.gdx.graphics.g2d.SpriteBatch;
@@ -378,6 +378,6 @@ public class NormalMapTest extends ApplicationAdapter {
 		else if (args.length == 1) //
 			args = new String[] {args[0], null};
 
-		new LwjglApplication(new NormalMapTest(args[0], args[1]));
+		new Lwjgl3Application(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 e7dff07c3..9dd01ba5e 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.lwjgl.LwjglApplication;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
 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 LwjglApplication(new SimpleTest1());
+		new Lwjgl3Application(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 569449591..a581ab74e 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.lwjgl.LwjglApplication;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
 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 LwjglApplication(new SimpleTest2());
+		new Lwjgl3Application(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 5e1433604..44a65a94c 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.lwjgl.LwjglApplication;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
 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 LwjglApplication(new SimpleTest3());
+		new Lwjgl3Application(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 af9a68f64..a18402f8d 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.lwjgl.LwjglApplication;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
 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 LwjglApplication(new SimpleTest4());
+		new Lwjgl3Application(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 242a20fb9..3c48cf77b 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.lwjgl.LwjglApplication;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
 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 LwjglApplication(new SkeletonAssetManagerTest());
+		new Lwjgl3Application(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 af940706e..430231722 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.lwjgl.LwjglApplication;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
 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 LwjglApplication(new SkeletonAttachmentTest());
+		new Lwjgl3Application(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 de7a7ba18..d3b8108d1 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.lwjgl.LwjglApplication;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
 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 LwjglApplication(new SkinBonesMixAndMatchTest());
+		new Lwjgl3Application(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 6312cc947..81301a5eb 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
@@ -31,7 +31,8 @@ package com.esotericsoftware.spine;
 
 import com.badlogic.gdx.ApplicationAdapter;
 import com.badlogic.gdx.Gdx;
-import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3ApplicationConfiguration;
 import com.badlogic.gdx.graphics.OrthographicCamera;
 import com.badlogic.gdx.graphics.g2d.PolygonSpriteBatch;
 import com.badlogic.gdx.graphics.g2d.TextureAtlas;
@@ -122,6 +123,8 @@ public class TestHarness extends ApplicationAdapter {
 	}
 
 	public static void main (String[] args) throws Exception {
-		new LwjglApplication(new TestHarness(), "", 640, 640);
+		Lwjgl3ApplicationConfiguration config = new Lwjgl3ApplicationConfiguration();
+		config.setWindowedMode(640, 640);
+		new Lwjgl3Application(new TestHarness(), config);
 	}
 }
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 4fc136f75..c63fa059d 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.lwjgl.LwjglApplication;
-import com.badlogic.gdx.backends.lwjgl.LwjglApplicationConfiguration;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3ApplicationConfiguration;
 import com.badlogic.gdx.graphics.OrthographicCamera;
 import com.badlogic.gdx.graphics.g2d.PolygonSpriteBatch;
 import com.badlogic.gdx.graphics.g2d.TextureAtlas;
@@ -115,9 +115,8 @@ public class VertexEffectTest extends ApplicationAdapter {
 	}
 
 	public static void main (String[] args) throws Exception {
-		LwjglApplicationConfiguration config = new LwjglApplicationConfiguration();
-		config.width = 800;
-		config.height = 600;
-		new LwjglApplication(new VertexEffectTest(), config);
+		Lwjgl3ApplicationConfiguration config = new Lwjgl3ApplicationConfiguration();
+		config.setWindowedMode(800, 600);
+		new Lwjgl3Application(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 f72a48852..49a9555ed 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.lwjgl.LwjglApplication;
-import com.badlogic.gdx.backends.lwjgl.LwjglApplicationConfiguration;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3ApplicationConfiguration;
 import com.badlogic.gdx.files.FileHandle;
 import com.badlogic.gdx.graphics.Color;
 import com.badlogic.gdx.graphics.GL20;
@@ -368,13 +368,11 @@ public class SkeletonViewer extends ApplicationAdapter {
 		}
 		if (dpiScale >= 2.0f) uiScale = 2;
 
-		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);
+		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);
 	}
 }