diff --git a/.github/workflows/pre-commit.yml b/.github/workflows/pre-commit.yml
index 70d60a73b..d22047cbf 100644
--- a/.github/workflows/pre-commit.yml
+++ b/.github/workflows/pre-commit.yml
@@ -25,7 +25,7 @@ jobs:
           # fails
           git config --global --add safe.directory $(pwd)
           pip install pre-commit
-          pip install pylint==2.12.2
+          pip install pylint==2.17.7
           pip install flake8
           echo "::endgroup::"
           echo "::group::Run CMake"
diff --git a/python/podio/EventStore.py b/python/podio/EventStore.py
index d2df33cbe..068027aa4 100644
--- a/python/podio/EventStore.py
+++ b/python/podio/EventStore.py
@@ -55,8 +55,7 @@ def __init__(self, filenames):
 
   def __str__(self):
     result = "Content:"
-    for item in self.current_store.getCollectionNames():
-      result += f"\n\t{item}"
+    result += "\n\t".join(n for n in self.current_store.getCollectionNames())
     return result
 
   def get(self, name):