diff --git a/.pre-commit-hooks.yaml b/.pre-commit-hooks.yaml
index 50607541e..f99971ee5 100644
--- a/.pre-commit-hooks.yaml
+++ b/.pre-commit-hooks.yaml
@@ -13,7 +13,9 @@
     Rewrites all Terraform configuration files to a canonical format.
   entry: hooks/terraform_fmt.sh
   language: script
-  files: \.(tf|tofu|tfvars)$
+  # Supported extensions by Terraform specified in
+  # https://github.com/hashicorp/terraform/blob/0c63fb2b097edcd5cb1a91322765a414206fbea2/internal/command/fmt.go#L30-L35
+  files: \.(tf|tofu|tfvars|tftest\.hcl|tfmock\.hcl)$
   exclude: \.terraform/.*$
 
 - id: terraform_docs