diff --git a/common/lib/dependabot/file_fetchers/base.rb b/common/lib/dependabot/file_fetchers/base.rb
index 60bb61e84ac..baa7d290c9b 100644
--- a/common/lib/dependabot/file_fetchers/base.rb
+++ b/common/lib/dependabot/file_fetchers/base.rb
@@ -375,7 +375,7 @@ def _build_github_file_struct(file)
 
       def _gitlab_repo_contents(repo, path, commit)
         gitlab_client.
-          repo_tree(repo, path: path, ref_name: commit, per_page: 100).
+          repo_tree(repo, path: path, ref: commit, per_page: 100).
           map do |file|
             # GitLab API essentially returns the output from `git ls-tree`
             type = case file.type