diff --git a/commitizen/bump.py b/commitizen/bump.py
index 701b7d662e..2314b8d0e3 100644
--- a/commitizen/bump.py
+++ b/commitizen/bump.py
@@ -141,8 +141,7 @@ def update_version_in_files(
     """
     # TODO: separate check step and write step
     for location in files:
-        filepath, *regexes = location.split(":")
-        regex = regexes[0] if regexes else None
+        filepath, _, regex = location.partition(":")
 
         with open(filepath, "r") as f:
             version_file = f.read()
diff --git a/pyproject.toml b/pyproject.toml
index 78f9cb170e..68e79b072b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ tag_format = "v$version"
 version_files = [
   "pyproject.toml:version",
   "commitizen/__version__.py",
-  ".pre-commit-config.yaml:rev.\\s+(?=[^\\n]+Commitizen)"
+  ".pre-commit-config.yaml:rev:.\\s+(?=[^\\n]+Commitizen)"
 ]
 
 [tool.black]