diff --git a/build.gradle b/build.gradle
index 683c8934..518b561b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -41,8 +41,8 @@ dependencies {
     corelibs dep("org.jmonkeyengine:jme3-awt-dialogs:$jmeVersion-$jmeVersionTag", true, true)
     corelibs dep("org.jmonkeyengine:jme3-lwjgl:$jmeVersion-$jmeVersionTag", true, true)
     corelibs dep("org.jmonkeyengine:jme3-effects:$jmeVersion-$jmeVersionTag", true, true)
-    corelibs dep("com.github.stephengold:Minie:7.8.1", false, false) // replacement for bullet-native
-    corelibs dep("com.github.stephengold:Heart:8.7.0", true, true) // requirement for Minie
+    corelibs dep("com.github.stephengold:Minie:8.0.0", false, false) // replacement for bullet-native
+    corelibs dep("com.github.stephengold:Heart:9.0.0", true, true) // requirement for Minie
     corelibs dep(fileTree("lib"), false, false)
     corelibs dep("org.jmonkeyengine:jme3-jogg:$jmeVersion-$jmeVersionTag", true, true)