diff --git a/spine-godot/SConstruct b/spine-godot/SConstruct
index 14c6b596e..1e405f98f 100644
--- a/spine-godot/SConstruct
+++ b/spine-godot/SConstruct
@@ -66,7 +66,7 @@ Run the following command to download godot-cpp:
 
 env = SConscript("godot-cpp/SConstruct", {"env": env, "customs": customs})
 
-env.Append(CPPDEFINES=["SPINE_GODOT_EXTENSION", "_DISABLE_CONSTEXPR_MUTEX_CONSTRUCTOR"])
+env.Append(CPPDEFINES=["SPINE_GODOT_EXTENSION"])
 env.Append(CPPPATH=["spine_godot", "spine_godot/spine-cpp/include"])
 
 # sources = Glob("spine_godot/*.cpp") + Glob("spine_godot/spine-cpp/src/spine/*.cpp")
diff --git a/spine-godot/build/setup.sh b/spine-godot/build/setup.sh
index 748300d3e..0f9d3b79c 100755
--- a/spine-godot/build/setup.sh
+++ b/spine-godot/build/setup.sh
@@ -45,6 +45,7 @@ fi
 pushd ..
 rm -rf godot
 git clone --depth 1 $repo -b $branch
+
 if [ $dev = "true" ]; then
 	cp build/custom.py godot
 	if [ "$mono" = "true" ]; then
@@ -60,6 +61,14 @@ if [ $dev = "true" ]; then
 	fi
 fi
 cp -r ../spine-cpp/spine-cpp spine_godot
+
+# Apply patch for 4.3-stable, see https://github.com/godotengine/godot/issues/95861/#issuecomment-2486021565
+if [ "$branch" = "4.3-stable" ]; then
+    pushd godot
+    cp ../build/thorvg-4.3-stable.patch thirdparty/thorvg/src/common/tvgLock.h
+    popd
+fi
+
 popd
 
 popd > /dev/null
\ No newline at end of file
diff --git a/spine-godot/build/thorvg-4.3-stable.patch b/spine-godot/build/thorvg-4.3-stable.patch
new file mode 100644
index 000000000..d3a4e41c5
--- /dev/null
+++ b/spine-godot/build/thorvg-4.3-stable.patch
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2024 the ThorVG project. All rights reserved.
+
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef _TVG_LOCK_H_
+#define _TVG_LOCK_H_
+
+#ifdef THORVG_THREAD_SUPPORT
+
+#include <mutex>
+#include "tvgTaskScheduler.h"
+
+namespace tvg {
+
+    struct Key
+    {
+        std::mutex mtx;
+    };
+
+    struct ScopedLock
+    {
+        Key* key = nullptr;
+
+        ScopedLock(Key& k)
+        {
+            if (TaskScheduler::threads() > 0) {
+                k.mtx.lock();
+                key = &k;
+            }
+        }
+
+        ~ScopedLock()
+        {
+            if (TaskScheduler::threads() > 0) {
+                key->mtx.unlock();
+            }
+        }
+    };
+
+}
+
+#else //THORVG_THREAD_SUPPORT
+
+namespace tvg {
+
+    struct Key {};
+
+    struct ScopedLock
+    {
+        ScopedLock(Key& key) {}
+    };
+
+}
+
+#endif //THORVG_THREAD_SUPPORT
+
+#endif //_TVG_LOCK_H_
+