diff --git a/.pre-commit-hooks.yaml b/.pre-commit-hooks.yaml
index 80da2c0c6..6d1790c6b 100644
--- a/.pre-commit-hooks.yaml
+++ b/.pre-commit-hooks.yaml
@@ -160,7 +160,7 @@
   description: 'Validate GitLab CI config against the schema provided by SchemaStore'
   entry: check-jsonschema --builtin-schema vendor.gitlab-ci --data-transform gitlab-ci --regex-variant nonunicode
   language: python
-  files: ^.*\.gitlab-ci\.yml$
+  files: ^.*\.gitlab-ci\.(yml|yaml)$
   types: [yaml]
 
 # this hook is autogenerated from a script
diff --git a/src/check_jsonschema/catalog.py b/src/check_jsonschema/catalog.py
index f98ceb6b2..0a59c1e9d 100644
--- a/src/check_jsonschema/catalog.py
+++ b/src/check_jsonschema/catalog.py
@@ -162,7 +162,7 @@ def _githubusercontent_url(owner: str, repo: str, ref: str, path: str) -> str:
                 "--regex-variant",
                 "nonunicode",
             ],
-            "files": r"^.*\.gitlab-ci\.yml$",
+            "files": r"^.*\.gitlab-ci\.(yml|yaml)$",
             "types": "yaml",
         },
     },
diff --git a/tests/acceptance/test_hook_file_matches.py b/tests/acceptance/test_hook_file_matches.py
index 918ed315b..bc9403848 100644
--- a/tests/acceptance/test_hook_file_matches.py
+++ b/tests/acceptance/test_hook_file_matches.py
@@ -138,9 +138,9 @@ def get_hook_config(hookid):
             ".gitlab-ci.yml",
             ".gitlab/.gitlab-ci.yml",
             "gitlab/.gitlab-ci.yml",
+            ".gitlab-ci.yaml",
         ),
         "bad": (
-            ".gitlab-ci.yaml",
             "gitlab-ci.yml",
             ".gitlab/gitlab-ci.yml",
             "gitlab/gitlab-ci.yml",