diff --git a/appveyor.yml b/appveyor.yml
index 4684285b..02142374 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,7 +1,7 @@
 ---
 # configure deployment by AppVeyor.com
 
-version: 19.0.0
+version: 20.0.0
 
 image: Visual Studio 2022
 
@@ -11,15 +11,15 @@ build_script:
   - cmd: gradlew.bat build --console=plain --no-daemon
 
 artifacts:
-  - path: dist/Libbulletjme-19.0.0.jar
+  - path: dist/Libbulletjme-20.0.0.jar
     name: classJar
-  - path: dist/Libbulletjme-19.0.0-javadoc.jar
+  - path: dist/Libbulletjme-20.0.0-javadoc.jar
     name: javadocJar
-  - path: dist/Libbulletjme-19.0.0-sources.jar
+  - path: dist/Libbulletjme-20.0.0-sources.jar
     name: sourcesJar
-  - path: dist/Libbulletjme-19.0.0.pom
+  - path: dist/Libbulletjme-20.0.0.pom
     name: pom
-  - path: dist/Libbulletjme-19.0.0.module
+  - path: dist/Libbulletjme-20.0.0.module
     name: module
   - path: dist/Windows32DebugDp_bulletjme.dll
     name: dll32DD
diff --git a/build.gradle b/build.gradle
index f0412ecb..916b970c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -11,7 +11,7 @@ plugins {
 ext {
     group = 'com.github.stephengold'
     artifact = 'Libbulletjme'
-    version = '19.0.0'
+    version = '20.0.0'
     baseName = "${artifact}-${version}" // for artifacts
     websiteUrl = 'https://github.com/stephengold/Libbulletjme'
 }
diff --git a/release-notes.md b/release-notes.md
index 8839eb09..cb02e5cb 100644
--- a/release-notes.md
+++ b/release-notes.md
@@ -1,5 +1,11 @@
 # Release log for the Libbulletjme project
 
+## Version 20.0.0 released on 22 January 2024
+
++ Changed both APIs (both Java and native) of the `CustomConvexShape` class
+  to better support scalable of custom shapes.
++ Added a 3-argument constructor to the `CustomConvexShape` class.
+
 ## Version 19.0.0 released on 19 January 2024
 
 + Changed the Java API:
diff --git a/src/main/java/com/jme3/bullet/util/NativeLibrary.java b/src/main/java/com/jme3/bullet/util/NativeLibrary.java
index 110231bf..8d3e115f 100644
--- a/src/main/java/com/jme3/bullet/util/NativeLibrary.java
+++ b/src/main/java/com/jme3/bullet/util/NativeLibrary.java
@@ -52,7 +52,7 @@ final public class NativeLibrary {
     /**
      * expected version string of the native library
      */
-    final public static String expectedVersion = "19.0.0";
+    final public static String expectedVersion = "20.0.0";
     // *************************************************************************
     // constructors
 
diff --git a/src/main/native/glue/jmeClasses.h b/src/main/native/glue/jmeClasses.h
index 94ad7a54..e08c369a 100644
--- a/src/main/native/glue/jmeClasses.h
+++ b/src/main/native/glue/jmeClasses.h
@@ -38,7 +38,7 @@
 
 #include <jni.h>
 
-#define LIBBULLETJME_VERSION "19.0.0"
+#define LIBBULLETJME_VERSION "20.0.0"
 
 #define EXCEPTION_CHK(pEnv, retval) \
     if (pEnv->ExceptionCheck()) { \