diff --git a/.github/workflows/ci_ubuntu.yml b/.github/workflows/ci_ubuntu.yml
index 595291a9..3878f169 100644
--- a/.github/workflows/ci_ubuntu.yml
+++ b/.github/workflows/ci_ubuntu.yml
@@ -18,8 +18,8 @@ jobs:
     strategy:
       max-parallel: 4
       matrix:
-        os: ["ubuntu-20.04", "ubuntu-22.04"]
-        java-version: ["16", "17", "18", "19"]
+        os: ["ubuntu-22.04"]
+        java-version: ["19"]
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-java@v2
@@ -27,6 +27,8 @@ jobs:
           distribution: 'temurin'
           java-version: ${{ matrix.java-version }}
           cache: 'gradle'
+      - name: Setup Gradle
+        uses: gradle/gradle-build-action@v2
       - name: Compiling the project
         run: gradle copyJarToLib
       - name: Generating the schema