diff --git a/.gitea/workflows/maven.yml b/.gitea/workflows/maven.yml
index c4f2f71..3ad9821 100644
--- a/.gitea/workflows/maven.yml
+++ b/.gitea/workflows/maven.yml
@@ -14,10 +14,10 @@ jobs:
         uses: stCarolas/setup-maven@v5
         with:
           maven-version: 3.9.9
-      - name: Set up JDK 21
+      - name: Set up JDK 17
         uses: actions/setup-java@v4
         with:
-          java-version: 21
+          java-version: 17
           distribution: 'oracle'
           cache: 'maven'
           cache-dependency-path: 'sub-project/pom.xml'
diff --git a/pom.xml b/pom.xml
index 6addd80..78b41ad 100644
--- a/pom.xml
+++ b/pom.xml
@@ -27,7 +27,7 @@
         <url/>
     </scm>
     <properties>
-        <java.version>21</java.version>
+        <java.version>17</java.version>
     </properties>
     <dependencies>
         <dependency>