diff --git a/data-node/src/test/java/org/graylog/datanode/integration/DatanodeSecuritySetupIT.java b/data-node/src/test/java/org/graylog/datanode/integration/DatanodeSecuritySetupIT.java
index 349e9ba13a..56758ad787 100644
--- a/data-node/src/test/java/org/graylog/datanode/integration/DatanodeSecuritySetupIT.java
+++ b/data-node/src/test/java/org/graylog/datanode/integration/DatanodeSecuritySetupIT.java
@@ -30,6 +30,7 @@ import org.graylog.datanode.testinfra.DatanodeContainerizedBackend;
 import org.graylog2.plugin.Tools;
 import org.graylog2.shared.utilities.StringUtils;
 import org.hamcrest.Matchers;
+import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.io.TempDir;
@@ -106,6 +107,11 @@ public class DatanodeSecuritySetupIT {
         }).start();
     }
 
+    @AfterEach
+    void tearDown() {
+        backend.stop();
+    }
+
     @Test
     void testSecuredSetup() throws ExecutionException, RetryException {
 
diff --git a/graylog2-server/src/test/java/org/graylog/testing/mongodb/MongoDBContainer.java b/graylog2-server/src/test/java/org/graylog/testing/mongodb/MongoDBContainer.java
index 479ddd2cf7..015070d93c 100644
--- a/graylog2-server/src/test/java/org/graylog/testing/mongodb/MongoDBContainer.java
+++ b/graylog2-server/src/test/java/org/graylog/testing/mongodb/MongoDBContainer.java
@@ -72,4 +72,13 @@ public class MongoDBContainer extends GenericContainer<MongoDBContainer> {
             return "could not get info from container!";
         }
     }
+
+    @Override
+    public void close() {
+        super.close();
+        final Network network = getNetwork();
+        if(network != null) {
+            network.close();
+        }
+    }
 }