diff --git a/build-javascript/build.sh b/build-javascript/build.sh
index 72327fe..95df2d4 100755
--- a/build-javascript/build.sh
+++ b/build-javascript/build.sh
@@ -6,9 +6,11 @@ set -e
 
 export BUILD_NAME=official
 export SCONS="scons -j${NUM_CORES} verbose=yes warnings=no progress=no"
-export OPTIONS="debug_symbols=no use_lto=no"
-export OPTIONS_MONO="module_mono_enabled=yes mono_static=yes mono_prefix=/root/mono-installs/wasm-runtime-release"
+export OPTIONS="debug_symbols=no use_lto=yes"
+export OPTIONS_MONO="module_mono_enabled=yes mono_static=yes mono_prefix=/root/mono-installs/wasm-runtime-release use_lto=no"
 export TERM=xterm
+export EMSDK_CLASSICAL=2.0.10
+export EMSDK_MONO=1.39.9
 
 rm -rf godot
 mkdir godot
@@ -20,9 +22,17 @@ tar xf /root/godot.tar.gz --strip-components=1
 if [ "${CLASSICAL}" == "1" ]; then
   echo "Starting classical build for JavaScript..."
 
+  source /root/emsdk_${EMSDK_CLASSICAL}/emsdk_env.sh
+
   $SCONS platform=javascript ${OPTIONS} target=release_debug tools=no
   $SCONS platform=javascript ${OPTIONS} target=release tools=no
 
+  $SCONS platform=javascript ${OPTIONS} target=release_debug tools=no threads_enabled=yes
+  $SCONS platform=javascript ${OPTIONS} target=release tools=no threads_enabled=yes
+
+  $SCONS platform=javascript ${OPTIONS} target=release_debug tools=no gdnative_enabled=yes
+  $SCONS platform=javascript ${OPTIONS} target=release tools=no gdnative_enabled=yes
+
   mkdir -p /root/out/templates
   cp -rvp bin/*.zip /root/out/templates
   rm -f bin/*.zip
@@ -33,6 +43,8 @@ fi
 if [ "${MONO}" == "1" ]; then
   echo "Starting Mono build for JavaScript..."
 
+  source /root/emsdk_${EMSDK_MONO}/emsdk_env.sh
+
   cp /root/mono-glue/*.cpp modules/mono/glue/
   cp -r /root/mono-glue/GodotSharp/GodotSharp/Generated modules/mono/glue/GodotSharp/GodotSharp/
   cp -r /root/mono-glue/GodotSharp/GodotSharpEditor/Generated modules/mono/glue/GodotSharp/GodotSharpEditor/
diff --git a/build-release.sh b/build-release.sh
index b30af18..82857a1 100755
--- a/build-release.sh
+++ b/build-release.sh
@@ -176,6 +176,12 @@ if [ "${build_classical}" == "1" ]; then
   cp out/javascript/templates/godot.javascript.opt.zip ${templatesdir}/webassembly_release.zip
   cp out/javascript/templates/godot.javascript.opt.debug.zip ${templatesdir}/webassembly_debug.zip
 
+  cp out/javascript/templates/godot.javascript.opt.threads.zip ${templatesdir}/webassembly_threads_release.zip
+  cp out/javascript/templates/godot.javascript.opt.debug.threads.zip ${templatesdir}/webassembly_threads_debug.zip
+
+  cp out/javascript/templates/godot.javascript.opt.gdnative.zip ${templatesdir}/webassembly_gdnative_release.zip
+  cp out/javascript/templates/godot.javascript.opt.debug.gdnative.zip ${templatesdir}/webassembly_gdnative_debug.zip
+
   ## Android (Classical) ##
 
   # Lib for direct download