diff --git a/config/clients/java/template/.github/workflows/main.yml.mustache b/config/clients/java/template/.github/workflows/main.yml.mustache
index 61a5873e..278a7cc6 100644
--- a/config/clients/java/template/.github/workflows/main.yml.mustache
+++ b/config/clients/java/template/.github/workflows/main.yml.mustache
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        java: [ '11', '17', '20' ]
+        java: [ '11', '17', '21' ]
     steps:
     - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v3.5.2
     - name: Set up JDK