diff --git a/overleaf/docker-compose.yaml b/overleaf/docker-compose.yaml
index 7e86832..612da36 100644
--- a/overleaf/docker-compose.yaml
+++ b/overleaf/docker-compose.yaml
@@ -1,4 +1,3 @@
-version: '2.2'
 services:
     sharelatex:
         restart: always
@@ -49,7 +48,5 @@ services:
 
 volumes:
     overleaf_sharelatex_data:
-      external: true
     overleaf_mongo_data:
-      external: true
     redis_data: