diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 5de29fe65..844c5574d 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -16,9 +16,8 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        # The last 3 LTS releases
-        # Java 17 is run in codacy-coverage-reporter
-        java: [ 21 ]
+        # Java 8 only in this branch 1.3-java8
+        java: [ 8 ]
     name: Java ${{matrix.java}}
     steps:
       - uses: actions/checkout@v4.1.1
diff --git a/pom.xml b/pom.xml
index 7a288f166..060a96b0a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -305,7 +305,7 @@
                 <version>${maven-repository-plugin.version}</version>
             </plugin>
             <!-- GPG signing config -->
-            <!--plugin>
+            <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-gpg-plugin</artifactId>
                 <version>${maven-gpg-plugin.version}</version>
@@ -318,7 +318,7 @@
                         </goals>
                     </execution>
                 </executions>
-            </plugin-->
+            </plugin>
             <plugin>
                 <groupId>org.sonatype.plugins</groupId>
                 <artifactId>nexus-staging-maven-plugin</artifactId>