diff --git a/ldap-overleaf-sl/Dockerfile b/ldap-overleaf-sl/Dockerfile
index 79971a4..08f9fa8 100644
--- a/ldap-overleaf-sl/Dockerfile
+++ b/ldap-overleaf-sl/Dockerfile
@@ -1,4 +1,6 @@
-FROM sharelatex/sharelatex:latest
+FROM sharelatex/sharelatex:2.3.1
+# FROM sharelatex/sharelatex:latest 
+
 LABEL maintainer="Simon Haller-Seeber"
 LABEL version="0.1"