diff --git a/README.md b/README.md
index 9fdc313..3b5f0eb 100644
--- a/README.md
+++ b/README.md
@@ -25,6 +25,13 @@ dependencies {
 @ComponentScan("no.datek.slim")
 ```
 
+## Update JRuby
+
+Edit `build.gradle` and set the desired JRuby version:
+
+    final String JRUBY_VERSION = '9.4.7.0';
+
+
 ## Release to Maven Central
 
 * Bump the version in build.gradle and commit and push.
diff --git a/build.gradle b/build.gradle
index aaaa4c6..ee51009 100644
--- a/build.gradle
+++ b/build.gradle
@@ -7,8 +7,8 @@ plugins {
 }
 
 group 'no.datek'
-version '0.19.2'
-final String JRUBY_VERSION = '9.4.6.0';
+version '0.20.0'
+final String JRUBY_VERSION = '9.4.7.0';
 
 repositories {
     mavenLocal()