diff --git a/examples/pom.xml b/examples/pom.xml
index c43b839f..94db8709 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -7,6 +7,18 @@
         <groupId>org.streamreasoning.rsp4j</groupId>
         <version>1.0.0</version>
     </parent>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>11</source>
+                    <target>11</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
     <modelVersion>4.0.0</modelVersion>
     <version>${rsp4j.version}</version>
     <artifactId>examples</artifactId>
diff --git a/pom.xml b/pom.xml
index 29c8c774..fa84e882 100644
--- a/pom.xml
+++ b/pom.xml
@@ -60,6 +60,12 @@
                 <artifactId>lombok</artifactId>
                 <version>1.18.20</version>
             </dependency>
+            <dependency>
+                <groupId>org.jetbrains.externalAnnotations.junit</groupId>
+                <artifactId>junit</artifactId>
+                <version>4.12-an1</version>
+                <scope>test</scope>
+            </dependency>
         </dependencies>
     </dependencyManagement>
 
@@ -81,6 +87,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.10.1</version>
                 <configuration>
                     <source>9</source>
                     <target>9</target>