diff --git a/.github/actions/build-installers/action.yml b/.github/actions/build-installers/action.yml
index 6752d3711..1aeaee9e1 100644
--- a/.github/actions/build-installers/action.yml
+++ b/.github/actions/build-installers/action.yml
@@ -15,10 +15,10 @@ inputs:
 runs:
   using: "composite"
   steps:
-    - name: Set up JDK 21 # NBPackage requires JDK
+    - name: Set up JDK 25 # NBPackage requires JDK
       uses: actions/setup-java@v5
       with:
-        java-version: '21'
+        java-version: '25'
         distribution: 'temurin'
 
     - name: Download bundle
diff --git a/.github/actions/build-sdk/action.yml b/.github/actions/build-sdk/action.yml
index 641fbe58c..0fb34ffa4 100644
--- a/.github/actions/build-sdk/action.yml
+++ b/.github/actions/build-sdk/action.yml
@@ -14,10 +14,10 @@ inputs:
 runs:
   using: "composite"
   steps:
-    - name: Set up JDK 21
+    - name: Set up JDK 25
       uses: actions/setup-java@v5
       with:
-        java-version: '21'
+        java-version: '25'
         distribution: 'temurin'
 
     - name: Validate the Gradle wrapper
diff --git a/BasicGameTemplate/nbproject/project.properties b/BasicGameTemplate/nbproject/project.properties
index f3c44b70d..df9f65a01 100644
--- a/BasicGameTemplate/nbproject/project.properties
+++ b/BasicGameTemplate/nbproject/project.properties
@@ -51,8 +51,8 @@ javac.compilerargs=
 javac.deprecation=false
 javac.processorpath=\
     ${javac.classpath}
-javac.source=21
-javac.target=21
+javac.source=25
+javac.target=25
 javac.test.classpath=\
     ${javac.classpath}:\
     ${build.classes.dir}
diff --git a/JME3TestsTemplate/nbproject/project.properties b/JME3TestsTemplate/nbproject/project.properties
index 9c88d6ff3..58dae8aa3 100644
--- a/JME3TestsTemplate/nbproject/project.properties
+++ b/JME3TestsTemplate/nbproject/project.properties
@@ -42,8 +42,8 @@ javac.classpath=\
 # Space-separated list of extra javac options
 javac.compilerargs=
 javac.deprecation=false
-javac.source=21
-javac.target=21
+javac.source=25
+javac.target=25
 javac.test.classpath=\
     ${javac.classpath}:\
     ${build.classes.dir}
diff --git a/installers/download-jdks.sh b/installers/download-jdks.sh
index 549a69a45..540e33b3e 100755
--- a/installers/download-jdks.sh
+++ b/installers/download-jdks.sh
@@ -4,7 +4,7 @@
 
 set -e # Quit on Error
 
-jdk_major_version="21"
+jdk_major_version="25"
 jvm_impl="hotspot"
 jdk_vendor="eclipse"
 
diff --git a/jme3-android/nbproject/project.properties b/jme3-android/nbproject/project.properties
index 1ace752eb..279176cfa 100644
--- a/jme3-android/nbproject/project.properties
+++ b/jme3-android/nbproject/project.properties
@@ -1,6 +1,6 @@
 #Updated by build script
 #Thu, 25 Aug 2011 21:00:54 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-angelfont/nbproject/project.properties b/jme3-angelfont/nbproject/project.properties
index 7316056ce..92a7dd8ed 100644
--- a/jme3-angelfont/nbproject/project.properties
+++ b/jme3-angelfont/nbproject/project.properties
@@ -1,5 +1,5 @@
 #Thu, 25 Aug 2011 20:26:50 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 nbm.homepage=https://www.jmonkeyengine.org
 nbm.module.author=Normen Hansen
diff --git a/jme3-assetbrowser/nbproject/project.properties b/jme3-assetbrowser/nbproject/project.properties
index def3d2911..70f1d5b44 100644
--- a/jme3-assetbrowser/nbproject/project.properties
+++ b/jme3-assetbrowser/nbproject/project.properties
@@ -1,5 +1,5 @@
 #Thu, 25 Aug 2011 20:26:49 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-assetpack-support/nbproject/project.properties b/jme3-assetpack-support/nbproject/project.properties
index 712cc5326..73c1fb775 100644
--- a/jme3-assetpack-support/nbproject/project.properties
+++ b/jme3-assetpack-support/nbproject/project.properties
@@ -1,5 +1,5 @@
 #Thu, 25 Aug 2011 20:26:49 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-autodesk/nbproject/platform.properties b/jme3-autodesk/nbproject/platform.properties
index 67ee64ae7..2fc4baf25 100644
--- a/jme3-autodesk/nbproject/platform.properties
+++ b/jme3-autodesk/nbproject/platform.properties
@@ -129,8 +129,8 @@ nbplatform.active=default
 #need these in the file for all dependencies to resolve when using command line
 #ant and a download of the platform, same as those generated by netbeans platform
 #under ${user.properties.file} (defined in platform-private.properties)
-default.javac.source=21
-default.javac.target=21
+default.javac.source=25
+default.javac.target=25
 libs.absolutelayout.classpath=${nbplatform.default.netbeans.dest.dir}/java/modules/ext/AbsoluteLayout.jar
 libs.absolutelayout.javadoc=
 libs.absolutelayout.maven-pom=
diff --git a/jme3-autodesk/nbproject/project.properties b/jme3-autodesk/nbproject/project.properties
index ce0ba091e..e77aa92fa 100644
--- a/jme3-autodesk/nbproject/project.properties
+++ b/jme3-autodesk/nbproject/project.properties
@@ -1,5 +1,5 @@
 auxiliary.org-netbeans-spi-editor-hints-projects.perProjectHintSettingsFile=nbproject/cfg_hints.xml
 #Thu, 25 Aug 2011 20:26:49 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 spec.version.base=3.6.1
diff --git a/jme3-cinematics/nbproject/project.properties b/jme3-cinematics/nbproject/project.properties
index 95d4dabce..4527a4e06 100644
--- a/jme3-cinematics/nbproject/project.properties
+++ b/jme3-cinematics/nbproject/project.properties
@@ -1,5 +1,5 @@
 #Thu, 25 Aug 2011 20:26:50 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-code-check/nbproject/project.properties b/jme3-code-check/nbproject/project.properties
index 0213ae6c1..f91bbffba 100644
--- a/jme3-code-check/nbproject/project.properties
+++ b/jme3-code-check/nbproject/project.properties
@@ -1,5 +1,5 @@
 #Thu, 25 Aug 2011 20:26:50 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-codepalette/nbproject/project.properties b/jme3-codepalette/nbproject/project.properties
index 712cc5326..73c1fb775 100644
--- a/jme3-codepalette/nbproject/project.properties
+++ b/jme3-codepalette/nbproject/project.properties
@@ -1,5 +1,5 @@
 #Thu, 25 Aug 2011 20:26:49 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-core-baselibs/nbproject/project.properties b/jme3-core-baselibs/nbproject/project.properties
index fbcab5ea4..ca6706caa 100644
--- a/jme3-core-baselibs/nbproject/project.properties
+++ b/jme3-core-baselibs/nbproject/project.properties
@@ -1,4 +1,4 @@
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-core-libraries/nbproject/project.properties b/jme3-core-libraries/nbproject/project.properties
index d1eea1307..d3b5d59aa 100644
--- a/jme3-core-libraries/nbproject/project.properties
+++ b/jme3-core-libraries/nbproject/project.properties
@@ -1,5 +1,5 @@
 #Thu, 25 Aug 2011 20:26:48 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-core-updatecenters/nbproject/project.properties b/jme3-core-updatecenters/nbproject/project.properties
index 8555c2630..fe985af70 100644
--- a/jme3-core-updatecenters/nbproject/project.properties
+++ b/jme3-core-updatecenters/nbproject/project.properties
@@ -1,4 +1,4 @@
 #Thu, 25 Aug 2011 20:26:49 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 spec.version.base=3.5.2
diff --git a/jme3-core/nbproject/project.properties b/jme3-core/nbproject/project.properties
index 12cdd5ff2..c1b5897f3 100644
--- a/jme3-core/nbproject/project.properties
+++ b/jme3-core/nbproject/project.properties
@@ -1,7 +1,7 @@
 #Thu, 25 Aug 2011 20:26:48 +0200
 file.reference.DDSUtils.jar=release/modules/ext/DDSUtils.jar
 #Thu, 25 Aug 2011 19:32:54 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-dark-laf/nbproject/project.properties b/jme3-dark-laf/nbproject/project.properties
index e389d229c..4fed28fac 100644
--- a/jme3-dark-laf/nbproject/project.properties
+++ b/jme3-dark-laf/nbproject/project.properties
@@ -1,5 +1,5 @@
 file.reference.nimrodlf.jar=release/modules/ext/nimrodlf.jar
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-desktop-executables/nbproject/project.properties b/jme3-desktop-executables/nbproject/project.properties
index 712cc5326..73c1fb775 100644
--- a/jme3-desktop-executables/nbproject/project.properties
+++ b/jme3-desktop-executables/nbproject/project.properties
@@ -1,5 +1,5 @@
 #Thu, 25 Aug 2011 20:26:49 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-documentation/nbproject/project.properties b/jme3-documentation/nbproject/project.properties
index 95d6f8ca0..5057bdad8 100644
--- a/jme3-documentation/nbproject/project.properties
+++ b/jme3-documentation/nbproject/project.properties
@@ -1,4 +1,4 @@
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-glsl-highlighter/nbproject/project.properties b/jme3-glsl-highlighter/nbproject/project.properties
index e379e8913..bcebad845 100644
--- a/jme3-glsl-highlighter/nbproject/project.properties
+++ b/jme3-glsl-highlighter/nbproject/project.properties
@@ -1,3 +1,3 @@
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint:-serial
 project.license=jme license
diff --git a/jme3-gui/nbproject/project.properties b/jme3-gui/nbproject/project.properties
index 60152d079..22eb832af 100644
--- a/jme3-gui/nbproject/project.properties
+++ b/jme3-gui/nbproject/project.properties
@@ -9,7 +9,7 @@ file.reference.slf4j-simple-1.7.7.jar=release/modules/ext/slf4j-simple-1.7.7.jar
 file.reference.swingtonifty.jar=release/modules/ext/swingtonifty.jar
 file.reference.xsom-20110101-SNAPSHOT.jar=release/modules/ext/xsom-20110101-SNAPSHOT.jar
 #Thu, 25 Aug 2011 20:26:49 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-lwjgl-applet/nbproject/project.properties b/jme3-lwjgl-applet/nbproject/project.properties
index 712cc5326..73c1fb775 100644
--- a/jme3-lwjgl-applet/nbproject/project.properties
+++ b/jme3-lwjgl-applet/nbproject/project.properties
@@ -1,5 +1,5 @@
 #Thu, 25 Aug 2011 20:26:49 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-materialeditor/nbproject/project.properties b/jme3-materialeditor/nbproject/project.properties
index 712cc5326..73c1fb775 100644
--- a/jme3-materialeditor/nbproject/project.properties
+++ b/jme3-materialeditor/nbproject/project.properties
@@ -1,5 +1,5 @@
 #Thu, 25 Aug 2011 20:26:49 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-model-importer/nbproject/project.properties b/jme3-model-importer/nbproject/project.properties
index 712cc5326..73c1fb775 100644
--- a/jme3-model-importer/nbproject/project.properties
+++ b/jme3-model-importer/nbproject/project.properties
@@ -1,5 +1,5 @@
 #Thu, 25 Aug 2011 20:26:49 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-navmesh-gen/nbproject/project.properties b/jme3-navmesh-gen/nbproject/project.properties
index fe30131fe..4a8f7302b 100644
--- a/jme3-navmesh-gen/nbproject/project.properties
+++ b/jme3-navmesh-gen/nbproject/project.properties
@@ -1,4 +1,4 @@
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-obfuscate/nbproject/project.properties b/jme3-obfuscate/nbproject/project.properties
index 59538f1be..f5ed02174 100644
--- a/jme3-obfuscate/nbproject/project.properties
+++ b/jme3-obfuscate/nbproject/project.properties
@@ -1,5 +1,5 @@
 #Thu, 25 Aug 2011 20:26:50 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 license.file=../license-jme.txt
 nbm.homepage=https\://proguard.sourceforge.net/
diff --git a/jme3-project-baselibs/nbproject/project.properties b/jme3-project-baselibs/nbproject/project.properties
index d1eea1307..d3b5d59aa 100644
--- a/jme3-project-baselibs/nbproject/project.properties
+++ b/jme3-project-baselibs/nbproject/project.properties
@@ -1,5 +1,5 @@
 #Thu, 25 Aug 2011 20:26:48 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-project-libraries/nbproject/project.properties b/jme3-project-libraries/nbproject/project.properties
index d1eea1307..d3b5d59aa 100644
--- a/jme3-project-libraries/nbproject/project.properties
+++ b/jme3-project-libraries/nbproject/project.properties
@@ -1,5 +1,5 @@
 #Thu, 25 Aug 2011 20:26:48 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-project-testdata/nbproject/project.properties b/jme3-project-testdata/nbproject/project.properties
index d1eea1307..d3b5d59aa 100644
--- a/jme3-project-testdata/nbproject/project.properties
+++ b/jme3-project-testdata/nbproject/project.properties
@@ -1,5 +1,5 @@
 #Thu, 25 Aug 2011 20:26:48 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-scenecomposer/nbproject/project.properties b/jme3-scenecomposer/nbproject/project.properties
index 712cc5326..73c1fb775 100644
--- a/jme3-scenecomposer/nbproject/project.properties
+++ b/jme3-scenecomposer/nbproject/project.properties
@@ -1,5 +1,5 @@
 #Thu, 25 Aug 2011 20:26:49 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-templates/nbproject/project.properties b/jme3-templates/nbproject/project.properties
index d1eea1307..d3b5d59aa 100644
--- a/jme3-templates/nbproject/project.properties
+++ b/jme3-templates/nbproject/project.properties
@@ -1,5 +1,5 @@
 #Thu, 25 Aug 2011 20:26:48 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-templates/src/com/jme3/gde/templates/RollingTheMonkeyProject.zip b/jme3-templates/src/com/jme3/gde/templates/RollingTheMonkeyProject.zip
index 00789f9fb..55b39d906 100644
Binary files a/jme3-templates/src/com/jme3/gde/templates/RollingTheMonkeyProject.zip and b/jme3-templates/src/com/jme3/gde/templates/RollingTheMonkeyProject.zip differ
diff --git a/jme3-templates/src/com/jme3/gde/templates/files/freemarker/build.gradle.ftl b/jme3-templates/src/com/jme3/gde/templates/files/freemarker/build.gradle.ftl
index 6cd0956eb..20523ed51 100644
--- a/jme3-templates/src/com/jme3/gde/templates/files/freemarker/build.gradle.ftl
+++ b/jme3-templates/src/com/jme3/gde/templates/files/freemarker/build.gradle.ftl
@@ -40,7 +40,7 @@ project(":assets") {
 
     java {
         toolchain {
-            languageVersion = JavaLanguageVersion.of(21)
+            languageVersion = JavaLanguageVersion.of(25)
         }
     }
 }
@@ -114,7 +114,7 @@ jar {
 
 java {
     toolchain {
-        languageVersion = JavaLanguageVersion.of(21)
+        languageVersion = JavaLanguageVersion.of(25)
     }
 }
 
diff --git a/jme3-templates/src/com/jme3/gde/templates/jaimesascent/JaimesAscentDownloadPanel.java b/jme3-templates/src/com/jme3/gde/templates/jaimesascent/JaimesAscentDownloadPanel.java
index b2d9c6270..eeee18519 100644
--- a/jme3-templates/src/com/jme3/gde/templates/jaimesascent/JaimesAscentDownloadPanel.java
+++ b/jme3-templates/src/com/jme3/gde/templates/jaimesascent/JaimesAscentDownloadPanel.java
@@ -64,7 +64,7 @@ public JaimesAscentDownloadPanel() {
     }
     
     public int doDownloadZip() {
-        return downloadFile("https://github.com/neph1/JaimesAscent/archive/refs/tags/v1.1.1.zip", DOWNLOAD_FOLDER, ZIP_NAME);
+        return downloadFile("https://github.com/neph1/JaimesAscent/archive/refs/tags/v1.1.3.zip", DOWNLOAD_FOLDER, ZIP_NAME);
     }
     
     private int downloadFile(String fileURL, String saveDir, String fileName) {
diff --git a/jme3-templates/src/com/jme3/gde/templates/jaimesascent/build.gradle.ftl b/jme3-templates/src/com/jme3/gde/templates/jaimesascent/build.gradle.ftl
index f40ada913..b92b0cdd9 100644
--- a/jme3-templates/src/com/jme3/gde/templates/jaimesascent/build.gradle.ftl
+++ b/jme3-templates/src/com/jme3/gde/templates/jaimesascent/build.gradle.ftl
@@ -3,17 +3,20 @@ plugins {
     id 'application'
 }
 
-group 'com.JaimesAscent'
-version '1.0'
+group = 'com.JaimesAscent'
+version = '1.0'
 
-mainClassName = "com.JaimesAscent.JaimesAscent"
+application {
+    applicationName = '${name}'
+    mainClass = 'com.JaimesAscent.JaimesAscent'
+}
 
 repositories {
     mavenCentral()
 }
 
 project.ext {
-  jmeVer = '3.7.0-stable'
+  jmeVer = '3.9.0-stable'
 }
 
 project(":assets") {
@@ -31,14 +34,14 @@ project(":assets") {
 
     java {
         toolchain {
-            languageVersion = JavaLanguageVersion.of(21)
+            languageVersion = JavaLanguageVersion.of(25)
         }
     }
 }
 
 java {
     toolchain {
-        languageVersion = JavaLanguageVersion.of(21)
+        languageVersion = JavaLanguageVersion.of(25)
     }
 }
 
@@ -48,18 +51,18 @@ dependencies {
   implementation "org.jmonkeyengine:jme3-desktop:$jmeVer"
   implementation "org.jmonkeyengine:jme3-lwjgl:$jmeVer"
   implementation "org.jmonkeyengine:jme3-lwjgl:$jmeVer"
-  implementation "com.github.stephengold:Heart:9.0.0"
-  implementation "com.github.stephengold:Minie:8.0.0"
+  implementation "com.github.stephengold:Heart:9.3.0"
+  implementation "com.github.stephengold:Minie:9.0.3"
   implementation project("assets")
 
 }
 
 jar {
     manifest {
-        attributes 'Main-Class': "$mainClassName"
+        attributes 'Main-Class': application.mainClass
     }
 }
 
 wrapper {
-    gradleVersion = '8.6'
+    gradleVersion = '9.2.1'
 }
diff --git a/jme3-templates/src/com/jme3/gde/templates/monkeyzone/build.gradle.ftl b/jme3-templates/src/com/jme3/gde/templates/monkeyzone/build.gradle.ftl
index 8093c2a70..20586dbd5 100644
--- a/jme3-templates/src/com/jme3/gde/templates/monkeyzone/build.gradle.ftl
+++ b/jme3-templates/src/com/jme3/gde/templates/monkeyzone/build.gradle.ftl
@@ -3,17 +3,20 @@ plugins {
     id 'application'
 }
 
-group 'com.monkeyzone'
-version '1.0'
+group = 'com.monkeyzone'
+version = '1.0'
 
-mainClassName = "com.monkeyzone.MonkeyZone"
+application {
+    applicationName = '${name}'
+    mainClass = 'com.monkeyzone.MonkeyZone'
+}
 
 repositories {
     mavenCentral()
 }
 
 project.ext {
-  jmeVer = '3.7.0-stable'
+  jmeVer = '3.9.0-stable'
 }
 
 project(":assets") {
@@ -31,14 +34,14 @@ project(":assets") {
 
     java {
         toolchain {
-            languageVersion = JavaLanguageVersion.of(21)
+            languageVersion = JavaLanguageVersion.of(25)
         }
     }
 }
 
 java {
     toolchain {
-        languageVersion = JavaLanguageVersion.of(21)
+        languageVersion = JavaLanguageVersion.of(25)
     }
 }
 
@@ -48,18 +51,18 @@ dependencies {
   implementation "org.jmonkeyengine:jme3-desktop:$jmeVer"
   implementation "org.jmonkeyengine:jme3-lwjgl:$jmeVer"
   implementation "org.jmonkeyengine:jme3-lwjgl:$jmeVer"
-  implementation "com.github.stephengold:Heart:9.0.0"
-  implementation "com.github.stephengold:Minie:8.0.0"
+  implementation "com.github.stephengold:Heart:9.3.0"
+  implementation "com.github.stephengold:Minie:9.0.3"
   implementation project("assets")
 
 }
 
 jar {
     manifest {
-        attributes 'Main-Class': "$mainClassName"
+        attributes 'Main-Class': application.mainClass
     }
 }
 
 wrapper {
-    gradleVersion = '8.6'
+    gradleVersion = '9.2.1'
 }
diff --git a/jme3-templates/src/com/jme3/gde/templates/rollingthemonkey/RollingTheMonkeyWizardIterator.java b/jme3-templates/src/com/jme3/gde/templates/rollingthemonkey/RollingTheMonkeyWizardIterator.java
index f3afe7777..d96d7219b 100644
--- a/jme3-templates/src/com/jme3/gde/templates/rollingthemonkey/RollingTheMonkeyWizardIterator.java
+++ b/jme3-templates/src/com/jme3/gde/templates/rollingthemonkey/RollingTheMonkeyWizardIterator.java
@@ -117,9 +117,9 @@ private String[] createSteps() {
         
         // Create build.gradle from template
         File gradleBuildFile = new File(dirF, "build.gradle");
-        Map<String, Object> buildFileBindings = new HashMap<>();
         
-        createFileFromTemplate(gradleBuildFile, BUILDFILE, buildFileBindings);
+        createFileFromTemplate(gradleBuildFile, BUILDFILE,
+                Collections.singletonMap("name", wiz.getProperty("name")));
         
         // Always open top dir as a project:
         resultSet.add(dir);
diff --git a/jme3-templates/src/com/jme3/gde/templates/rollingthemonkey/build.gradle.ftl b/jme3-templates/src/com/jme3/gde/templates/rollingthemonkey/build.gradle.ftl
index 94e41ae1c..11e718423 100644
--- a/jme3-templates/src/com/jme3/gde/templates/rollingthemonkey/build.gradle.ftl
+++ b/jme3-templates/src/com/jme3/gde/templates/rollingthemonkey/build.gradle.ftl
@@ -3,17 +3,20 @@ plugins {
     id 'application'
 }
 
-group 'com.rollingthemonkey'
-version '1.0'
+group = 'com.rollingthemonkey'
+version = '1.0'
 
-mainClassName = "com.rollingthemonkey.RollingTheMonkey"
+application {
+    applicationName = '${name}'
+    mainClass = 'com.rollingthemonkey.RollingTheMonkey'
+}
 
 repositories {
     mavenCentral()
 }
 
 project.ext {
-  jmeVer = '3.7.0-stable'
+  jmeVer = '3.9.0-stable'
 }
 
 project(":assets") {
@@ -31,35 +34,35 @@ project(":assets") {
 
     java {
         toolchain {
-            languageVersion = JavaLanguageVersion.of(21)
+            languageVersion = JavaLanguageVersion.of(25)
         }
     }
 }
 
 java {
     toolchain {
-        languageVersion = JavaLanguageVersion.of(21)
+        languageVersion = JavaLanguageVersion.of(25)
     }
 }
 
 dependencies {
 
-  implementation "org.jmonkeyengine:jme3-core:$jmeVer"
-  implementation "org.jmonkeyengine:jme3-desktop:$jmeVer"
-  implementation "org.jmonkeyengine:jme3-lwjgl:$jmeVer"
-  implementation "org.jmonkeyengine:jme3-lwjgl:$jmeVer"
-  implementation "com.github.stephengold:Heart:9.0.0"
-  implementation "com.github.stephengold:Minie:8.0.0"
-  implementation project("assets")
+    implementation "org.jmonkeyengine:jme3-core:$jmeVer"
+    implementation "org.jmonkeyengine:jme3-desktop:$jmeVer"
+    implementation "org.jmonkeyengine:jme3-lwjgl:$jmeVer"
+    implementation "org.jmonkeyengine:jme3-lwjgl:$jmeVer"
+    implementation "com.github.stephengold:Heart:9.3.0"
+    implementation "com.github.stephengold:Minie:9.0.3"
+    implementation project("assets")
 
 }
 
 jar {
     manifest {
-        attributes 'Main-Class': "$mainClassName"
+        attributes 'Main-Class': application.mainClass
     }
 }
 
 wrapper {
-    gradleVersion = '8.6'
+    gradleVersion = '9.2.1'
 }
diff --git a/jme3-terrain-editor/nbproject/project.properties b/jme3-terrain-editor/nbproject/project.properties
index 770164f42..3e2af497c 100644
--- a/jme3-terrain-editor/nbproject/project.properties
+++ b/jme3-terrain-editor/nbproject/project.properties
@@ -1,5 +1,5 @@
 #Thu, 25 Aug 2011 20:26:49 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-tests-template/nbproject/project.properties b/jme3-tests-template/nbproject/project.properties
index d1eea1307..d3b5d59aa 100644
--- a/jme3-tests-template/nbproject/project.properties
+++ b/jme3-tests-template/nbproject/project.properties
@@ -1,5 +1,5 @@
 #Thu, 25 Aug 2011 20:26:48 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-texture-editor/nbproject/project.properties b/jme3-texture-editor/nbproject/project.properties
index 0d3d78ac3..986a010e9 100644
--- a/jme3-texture-editor/nbproject/project.properties
+++ b/jme3-texture-editor/nbproject/project.properties
@@ -1,5 +1,5 @@
 #Thu, 25 Aug 2011 20:26:49 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/jme3-vehicle-creator/nbproject/project.properties b/jme3-vehicle-creator/nbproject/project.properties
index 83a56fe66..de6f8c63f 100644
--- a/jme3-vehicle-creator/nbproject/project.properties
+++ b/jme3-vehicle-creator/nbproject/project.properties
@@ -1,4 +1,4 @@
 #Thu, 25 Aug 2011 20:26:50 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 spec.version.base=3.5.2
diff --git a/jme3-wavefront/nbproject/platform.properties b/jme3-wavefront/nbproject/platform.properties
index 67ee64ae7..2fc4baf25 100644
--- a/jme3-wavefront/nbproject/platform.properties
+++ b/jme3-wavefront/nbproject/platform.properties
@@ -129,8 +129,8 @@ nbplatform.active=default
 #need these in the file for all dependencies to resolve when using command line
 #ant and a download of the platform, same as those generated by netbeans platform
 #under ${user.properties.file} (defined in platform-private.properties)
-default.javac.source=21
-default.javac.target=21
+default.javac.source=25
+default.javac.target=25
 libs.absolutelayout.classpath=${nbplatform.default.netbeans.dest.dir}/java/modules/ext/AbsoluteLayout.jar
 libs.absolutelayout.javadoc=
 libs.absolutelayout.maven-pom=
diff --git a/jme3-wavefront/nbproject/project.properties b/jme3-wavefront/nbproject/project.properties
index 8555c2630..fe985af70 100644
--- a/jme3-wavefront/nbproject/project.properties
+++ b/jme3-wavefront/nbproject/project.properties
@@ -1,4 +1,4 @@
 #Thu, 25 Aug 2011 20:26:49 +0200
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint\:-serial
 spec.version.base=3.5.2
diff --git a/jme3-welcome-screen/nbproject/project.properties b/jme3-welcome-screen/nbproject/project.properties
index d0f8fa4cb..89810e73c 100644
--- a/jme3-welcome-screen/nbproject/project.properties
+++ b/jme3-welcome-screen/nbproject/project.properties
@@ -1,4 +1,4 @@
-javac.source=21
+javac.source=25
 javac.compilerargs=-Xlint -Xlint:-serial
 license.file=../license-jme.txt
 nbm.homepage=https://www.jmonkeyengine.org
diff --git a/nbproject/platform.properties b/nbproject/platform.properties
index 67ee64ae7..2fc4baf25 100644
--- a/nbproject/platform.properties
+++ b/nbproject/platform.properties
@@ -129,8 +129,8 @@ nbplatform.active=default
 #need these in the file for all dependencies to resolve when using command line
 #ant and a download of the platform, same as those generated by netbeans platform
 #under ${user.properties.file} (defined in platform-private.properties)
-default.javac.source=21
-default.javac.target=21
+default.javac.source=25
+default.javac.target=25
 libs.absolutelayout.classpath=${nbplatform.default.netbeans.dest.dir}/java/modules/ext/AbsoluteLayout.jar
 libs.absolutelayout.javadoc=
 libs.absolutelayout.maven-pom=
diff --git a/readme.md b/readme.md
index 582b2c460..ef777c780 100644
--- a/readme.md
+++ b/readme.md
@@ -27,7 +27,7 @@ Thus the prefered download is `jmonkeyplatform-windows-x64.exe` which essentiall
 After the SDK is up and running. A good starting point is to look at the jME examples. Under *File | New project | JME3 Tests* you can create a new project, populated with the jME build in examples. You can freely mess around with these and try out stuff. Your changes can always be reverted by simply creating a new *JME3 Tests* project. Once you are all comfortable and ready to embark on your own exciting journey, *File | New project | Basic game (with Gradle)* is the recommended starting point.
 
 ## Building the SDK
-Building the SDK is an easy process basically, but it depends on what kind of distribution you want to build. Currently the SDK requires __JDK 21__ to build.
+Building the SDK is an easy process basically, but it depends on what kind of distribution you want to build. Currently the SDK requires __JDK 25__ to build.
 You also have to know that the build process changes from time to time, so have a look at the `.github/workflows/gradle.yml` file, or related, you will see how we build our releases then.  
 
 Technically the gradle task `buildSdk` is the main task which builds the sdk (Invoking `./gradlew buildSdk` or `gradlew.bat buildSdk` on Windows).