diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
index c92b066..117c462 100644
--- a/.github/workflows/unit_tests.yml
+++ b/.github/workflows/unit_tests.yml
@@ -1,11 +1,5 @@
 name: Unit tests
-on:
-  push:
-    branches:
-      - main
-    pull_request:
-      branches:
-        - main
+on: [push, pull_request]
 jobs:
   run:
     name: Run unit tests
diff --git a/tests/test_precommit.py b/tests/test_precommit.py
index eb33433..da8b4a8 100644
--- a/tests/test_precommit.py
+++ b/tests/test_precommit.py
@@ -59,14 +59,14 @@ def test_precommit_hook(tmp_path):
         # First pass pre-commit. Will output something like:
         # nb_prep (pre-commit; process notebooks)..................................Failed
         # - hook id: nb_prep_precommit
-        out = shell_output(f"pre-commit try-repo {current_dir} --verbose")
+        out = shell_output(f"pre-commit try-repo '{current_dir}' --verbose")
         assert "nb_prep (pre-commit; process notebooks).." in out
         assert "...Failed" in out
 
         # Add changes
         repo.git.add(all=True)
         # Second pass should succeed
-        out = shell_output(f"pre-commit try-repo {current_dir} --verbose")
+        out = shell_output(f"pre-commit try-repo '{current_dir}' --verbose")
         assert "nb_prep (pre-commit; process notebooks).." in out
         assert "...Passed" in out
 
@@ -82,6 +82,6 @@ def test_precommit_hook(tmp_path):
         repo.git.add(all=True)
         repo.git.commit(message="add stuff", author=author)
 
-        out = shell_output(f"pre-commit try-repo {current_dir} --verbose --hook-stage post-commit")
+        out = shell_output(f"pre-commit try-repo '{current_dir}' --verbose --hook-stage post-commit")
         assert "nb_prep (post-commit; replace hash placeholder in .html filenames)...." in out
         assert "...Passed" in out