diff --git a/src/github_provider.py b/src/github_provider.py
index ef527b3c..be7bc8d1 100644
--- a/src/github_provider.py
+++ b/src/github_provider.py
@@ -91,7 +91,7 @@ def create_branch_and_push_all_changes(self, repo_dir: str, branch_name: str, co
         repo.git.add("-A")
 
         if self.__config.gpg_key_id:
-            repo.index.commit('-S', f'--gpg-sign={self.__config.gpg_key_id}', '-m', commit_message)
+            repo.git.commit('-S', f'--gpg-sign={self.__config.gpg_key_id}', '-m', commit_message)
         else:
             repo.index.commit(commit_message)