diff --git a/.github/workflows/build_and_test_cap.yml b/.github/workflows/build_and_test_cap.yml
index eaf4a74..7e6afca 100644
--- a/.github/workflows/build_and_test_cap.yml
+++ b/.github/workflows/build_and_test_cap.yml
@@ -18,8 +18,6 @@ on:
 jobs:
   npm:
     runs-on: [ ubuntu-latest ]
-    env:
-      JAVA_HOME: /usr/lib/jvm/java-17-openjdk
     strategy:
       matrix:
         node-version: [20.x, 22.x]
@@ -33,12 +31,12 @@ jobs:
         node-version: ${{ matrix.node-version }}
         cache: 'npm'
         cache-dependency-path: ams-cap-nodejs-bookshop
-    - name: Set up JDK 17 # for DCL -> DCN compilation to work before tests
+    - name: Set up JDK 21 # for DCL -> DCN compilation to work before tests
       uses: actions/setup-java@v4
       with:
-        java-version: '17'
+        java-version: '21'
         distribution: 'temurin'
     - run: npm ci
       working-directory: ams-cap-nodejs-bookshop
     - run: npm test
-      working-directory: ams-cap-nodejs-bookshop
\ No newline at end of file
+      working-directory: ams-cap-nodejs-bookshop