diff --git a/compose-files/docker-compose.yml b/compose-files/docker-compose.yml
index c0192b1..f25938a 100644
--- a/compose-files/docker-compose.yml
+++ b/compose-files/docker-compose.yml
@@ -21,7 +21,7 @@ services:
   ### Schul-Cloud Server
   ###
   mongodb-primary:
-    image: mongo:5.0.26 ## change tag in version.env
+    image: mongo:6.0.16
     container_name: mongodb-primary
     ports:
       - "27017:27017"
@@ -34,7 +34,7 @@ services:
     command: --bind_ip_all --replSet rs0
 
   mongodb-secondary:
-    image: mongo:5.0.26 ## change tag in version.env
+    image: mongo:6.0.16
     container_name: mongodb-secondary
     ports:
       - "27017"
@@ -45,7 +45,7 @@ services:
     command: --bind_ip_all --replSet rs0
 
   mongodb-arbiter:
-    image: mongo:5.0.26 ## change tag in version.env
+    image: mongo:6.0.16
     container_name: mongodb-arbiter
     ports:
       - "27017"
@@ -56,7 +56,7 @@ services:
     command: --bind_ip_all --replSet rs0
 
   mongosetup:
-    image: mongo:5.0.26
+    image: mongo:6.0.16
     depends_on:
       - mongodb-primary
       - mongodb-secondary
@@ -67,7 +67,7 @@ services:
     entrypoint: [ "bash", "/scripts/mongo_setup.sh" ]
 
   redis:
-    image: redis:${REDIS_DOCKER_TAG:-latest} ## change tag in version.env
+    image: redis:${REDIS_DOCKER_TAG:-latest}
     container_name: redis
     command: ["redis-server", "--appendonly", "yes"]
     hostname: redis
diff --git a/envs/default.env b/envs/default.env
index 8ae38a8..79108f5 100644
--- a/envs/default.env
+++ b/envs/default.env
@@ -4,5 +4,5 @@
 COMPOSE_FILES_PATH=./compose-files
 POSTGRES_DOCKER_TAG=11.9
 REDIS_DOCKER_TAG=6.0.8
-MONGO_DOCKER_TAG=5.0.26
+MONGO_DOCKER_TAG=6.0.16
 RABBITMQ_DOCKER_TAG=3.8.9-management
diff --git a/scripts/mongo_setup.sh b/scripts/mongo_setup.sh
index c21e9b7..b458c17 100644
--- a/scripts/mongo_setup.sh
+++ b/scripts/mongo_setup.sh
@@ -2,8 +2,8 @@
 sleep 10
 
 echo SETUP.sh time now: `date +"%T" `
-mongo --host mongodb-primary:27017 --eval 'rs.initiate({_id: "rs0", members: [{_id: 0, host: "mongodb-primary:27017" }]})'
-mongo --host mongodb-primary:27017 << EOF
+mongosh --host mongodb-primary:27017 --eval 'rs.initiate({_id: "rs0", members: [{_id: 0, host: "mongodb-primary:27017" }]})'
+mongosh --host mongodb-primary:27017 << EOF
   var cfg = {
     "_id": "rs0",
     "version": 1,