diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 34dc849..4274026 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -27,10 +27,10 @@ jobs:
         languages: java-kotlin
         queries: security-extended,security-and-quality
 
-    - name: Set up JDK 17
+    - name: Set up JDK 21
       uses: actions/setup-java@v4
       with:
-        java-version: '17'
+        java-version: '21'
         distribution: 'corretto'
         cache: maven
 
diff --git a/unique-attribute-validator-provider/pom.xml b/unique-attribute-validator-provider/pom.xml
index bb5f2b1..d5f2f00 100644
--- a/unique-attribute-validator-provider/pom.xml
+++ b/unique-attribute-validator-provider/pom.xml
@@ -9,8 +9,8 @@
     <version>${keycloak.version}-SNAPSHOT</version>
 
     <properties>
-        <maven.compiler.source>17</maven.compiler.source>
-        <maven.compiler.target>17</maven.compiler.target>
+        <maven.compiler.source>21</maven.compiler.source>
+        <maven.compiler.target>21</maven.compiler.target>
         <jboss.logging.version>3.4.1.Final</jboss.logging.version>
         <keycloak.version>25.0.0</keycloak.version>
     </properties>