diff --git a/.github/workflows/java8-maven.yml b/.github/workflows/java8-maven.yml
index 075b60e0..c4d26fb9 100644
--- a/.github/workflows/java8-maven.yml
+++ b/.github/workflows/java8-maven.yml
@@ -36,7 +36,10 @@ jobs:
       - name: Build and (headless) test with Maven
         uses: smithki/xvfb-action@v1.1.2
         with:
-          run: mvn -U -B -ntp package
+          run: mvn -U -B -ntp install
+
+      - name: Ensure reproducible builds with Maven
+        run: mvn -U -B -ntp clean verify -DskipTests
 
   auto-merge-job:
     needs: build-and-test-job
diff --git a/pom.xml b/pom.xml
index d62cd220..fe864939 100644
--- a/pom.xml
+++ b/pom.xml
@@ -35,6 +35,10 @@
         <url>http://github.com/nbbrd/sandbox/tree/master</url>
     </scm>
 
+    <properties>
+        <project.build.outputTimestamp>2024-01-01T00:00:00Z</project.build.outputTimestamp>
+    </properties>
+
     <build>
         <pluginManagement>
             <plugins>