diff --git a/theodolite-benchmarks/docker-test/uc1-flink-docker-compose/docker-compose.yml b/theodolite-benchmarks/docker-test/uc1-flink-docker-compose/docker-compose.yml
index aa35ac2d1dee01cdf25d2eb2ac77bd056865479a..2a0e6cda45fb81b5b20c658d9c51a4ced1ab2aae 100755
--- a/theodolite-benchmarks/docker-test/uc1-flink-docker-compose/docker-compose.yml
+++ b/theodolite-benchmarks/docker-test/uc1-flink-docker-compose/docker-compose.yml
@@ -3,7 +3,7 @@ services:
   zookeeper:
     image: confluentinc/cp-zookeeper
     expose:
-      - "9092"
+      - "2181"
     environment:
       ZOOKEEPER_CLIENT_PORT: 2181
   kafka:
diff --git a/theodolite-benchmarks/docker-test/uc1-kstreams-docker-compose/docker-compose.yml b/theodolite-benchmarks/docker-test/uc1-kstreams-docker-compose/docker-compose.yml
index 403becacff5a386eddfaa8e59fe7873d2adb006c..36717ed16bd46fd530bba1b02b0e32a929fa1efc 100755
--- a/theodolite-benchmarks/docker-test/uc1-kstreams-docker-compose/docker-compose.yml
+++ b/theodolite-benchmarks/docker-test/uc1-kstreams-docker-compose/docker-compose.yml
@@ -3,7 +3,7 @@ services:
   zookeeper:
     image: confluentinc/cp-zookeeper
     expose:
-      - "9092"
+      - "2181"
     environment:
       ZOOKEEPER_CLIENT_PORT: 2181
   kafka:
diff --git a/theodolite-benchmarks/docker-test/uc2-flink-docker-compose/docker-compose.yml b/theodolite-benchmarks/docker-test/uc2-flink-docker-compose/docker-compose.yml
index a8bf56d52c1be7fea3f172d86f6deac27fcc24f7..9afe3650368aa3f53a4a9272c29216c0dbda1933 100755
--- a/theodolite-benchmarks/docker-test/uc2-flink-docker-compose/docker-compose.yml
+++ b/theodolite-benchmarks/docker-test/uc2-flink-docker-compose/docker-compose.yml
@@ -1,10 +1,9 @@
 version: '2'
 services:
   zookeeper:
-    #image: wurstmeister/zookeeper
     image: confluentinc/cp-zookeeper
-    ports:
-      - "2181:2181"
+    expose:
+      - "2181"
     environment:
       ZOOKEEPER_CLIENT_PORT: 2181
   kafka:
diff --git a/theodolite-benchmarks/docker-test/uc2-kstreams-docker-compose/docker-compose.yml b/theodolite-benchmarks/docker-test/uc2-kstreams-docker-compose/docker-compose.yml
index 20d2c62dac13af29ec50439670308f2911f0d57a..fc4748758cceb6948fc409704a6a9c69cf56649a 100755
--- a/theodolite-benchmarks/docker-test/uc2-kstreams-docker-compose/docker-compose.yml
+++ b/theodolite-benchmarks/docker-test/uc2-kstreams-docker-compose/docker-compose.yml
@@ -1,10 +1,9 @@
 version: '2'
 services:
   zookeeper:
-    #image: wurstmeister/zookeeper
     image: confluentinc/cp-zookeeper
-    ports:
-      - "2181:2181"
+    expose:
+      - "2181"
     environment:
       ZOOKEEPER_CLIENT_PORT: 2181
   kafka:
diff --git a/theodolite-benchmarks/docker-test/uc3-flink-docker-compose/docker-compose.yml b/theodolite-benchmarks/docker-test/uc3-flink-docker-compose/docker-compose.yml
index 9999caf046e844d066200ecfbf15d3351c167d31..17dd9220c73f98f7c45463ab6dc998d2bdcc359c 100755
--- a/theodolite-benchmarks/docker-test/uc3-flink-docker-compose/docker-compose.yml
+++ b/theodolite-benchmarks/docker-test/uc3-flink-docker-compose/docker-compose.yml
@@ -1,10 +1,9 @@
 version: '2'
 services:
   zookeeper:
-    #image: wurstmeister/zookeeper
     image: confluentinc/cp-zookeeper
-    ports:
-      - "2181:2181"
+    expose:
+      - "2181"
     environment:
       ZOOKEEPER_CLIENT_PORT: 2181
   kafka:
diff --git a/theodolite-benchmarks/docker-test/uc3-kstreams-docker-compose/docker-compose.yml b/theodolite-benchmarks/docker-test/uc3-kstreams-docker-compose/docker-compose.yml
index ef16b858536b0d133dc49d002d16cf6c04193297..1e5c22a59a6755ae975c3a760615be311cb4329f 100755
--- a/theodolite-benchmarks/docker-test/uc3-kstreams-docker-compose/docker-compose.yml
+++ b/theodolite-benchmarks/docker-test/uc3-kstreams-docker-compose/docker-compose.yml
@@ -1,10 +1,9 @@
 version: '2'
 services:
   zookeeper:
-    #image: wurstmeister/zookeeper
     image: confluentinc/cp-zookeeper
-    ports:
-      - "2181:2181"
+    expose:
+      - "2181"
     environment:
       ZOOKEEPER_CLIENT_PORT: 2181
   kafka: