diff --git a/docs/compose/.env b/docs/compose/.env
index efd5e25..83eb123 100644
--- a/docs/compose/.env
+++ b/docs/compose/.env
@@ -12,7 +12,7 @@
 ROOT=/mailu
 
 # Mailu version to run (1.0, 1.1, etc. or master)
-VERSION=master
+VERSION=1.5.1
 
 # Set to a randomly generated 16 bytes string
 SECRET_KEY=ChangeMeChangeMe