diff --git a/README.md b/README.md
index 372128ae4..03c6c7d27 100644
--- a/README.md
+++ b/README.md
@@ -591,7 +591,7 @@ Example:
             require_serial: true
             entry: .generate-providers.sh
             language: script
-            files: (\.tf|\.tfvars)$
+            files: \.tf(vars)?$
             pass_filenames: false
      - repo: https://github.com/pre-commit/pre-commit-hooks
    [...]