diff --git a/docker-compose.yml b/docker-compose.yml
index 2709322..87e68fa 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -17,7 +17,7 @@ x-op-app: &app
     OPENPROJECT_HOST__NAME: "${OPENPROJECT_HOST__NAME:-localhost:8080}"
     OPENPROJECT_ADDITIONAL__HOST__NAMES: "${OPENPROJECT_ADDITIONAL__HOST__NAMES:-web}" # to allow access from hocuspocus directly
     OPENPROJECT_HSTS: "${OPENPROJECT_HSTS:-true}"
-    RAILS_CACHE_STORE: "memcache"
+    OPENPROJECT_RAILS__CACHE__STORE: "memcache"
     OPENPROJECT_CACHE__MEMCACHE__SERVER: "cache:11211"
     OPENPROJECT_RAILS__RELATIVE__URL__ROOT: "${OPENPROJECT_RAILS__RELATIVE__URL__ROOT:-}"
     OPENPROJECT_COLLABORATIVE__EDITING__HOCUSPOCUS__URL: "${COLLABORATIVE_SERVER_URL:-wss://${OPENPROJECT_HOST__NAME}/hocuspocus}"