diff --git a/test/src/test/java/de/widdix/awscftemplates/state/TestRDSPostgres.java b/test/src/test/java/de/widdix/awscftemplates/state/TestRDSPostgres.java
index c22753186..6ce5e28e6 100644
--- a/test/src/test/java/de/widdix/awscftemplates/state/TestRDSPostgres.java
+++ b/test/src/test/java/de/widdix/awscftemplates/state/TestRDSPostgres.java
@@ -64,7 +64,8 @@ public void testWithSecret() {
                                 new Parameter().withParameterKey("ParentVPCStack").withParameterValue(vpcStackName),
                                 new Parameter().withParameterKey("ParentClientStack").withParameterValue(clientStackName),
                                 new Parameter().withParameterKey("ParentSecretStack").withParameterValue(secretStackName),
-                                new Parameter().withParameterKey("DBName").withParameterValue("db1")
+                                new Parameter().withParameterKey("DBName").withParameterValue("db1"),
+                                new Parameter().withParameterKey("EngineVersion").withParameterValue("10.17")
                         );
                         // TODO how can we check if this stack works? start a bastion host and try to connect?
                     } finally {
diff --git a/test/src/test/java/de/widdix/awscftemplates/vpc/AVPCTest.java b/test/src/test/java/de/widdix/awscftemplates/vpc/AVPCTest.java
index 82abc37ae..8a4430341 100644
--- a/test/src/test/java/de/widdix/awscftemplates/vpc/AVPCTest.java
+++ b/test/src/test/java/de/widdix/awscftemplates/vpc/AVPCTest.java
@@ -13,7 +13,8 @@ protected final void testVPCSubnetInternetAccess(final Context context, final St
             this.createStack(context, stackName,
                     "ec2/al2-mutable-" + reach + ".yaml",
                     new Parameter().withParameterKey("ParentVPCStack").withParameterValue(parentVPCStack),
-                    new Parameter().withParameterKey("SubnetName").withParameterValue(subnetName)
+                    new Parameter().withParameterKey("SubnetName").withParameterValue(subnetName),
+                    new Parameter().withParameterKey("AmazonLinux2Version").withParameterValue("20191217.0")
             );
         } finally {
             this.deleteStack(context, stackName);