diff --git a/lib/manager/helmfile/readme.md b/lib/manager/helmfile/readme.md
index 1b3e489485320d5bf246555d1e3e4052ef8d915b..a77e0773d9ee0e131ebc6a46f18cb88c522a31fb 100644
--- a/lib/manager/helmfile/readme.md
+++ b/lib/manager/helmfile/readme.md
@@ -1 +1 @@
-Checks `helmfile.yml` files and extracts dependencies for the `helm` datasource.
+Checks `helmfile.yaml` files and extracts dependencies for the `helm` datasource.