diff --git a/tests/cli/test_cli.py b/tests/cli/test_cli.py
index 8c7a3ab..31c3e88 100644
--- a/tests/cli/test_cli.py
+++ b/tests/cli/test_cli.py
@@ -96,7 +96,7 @@ class TestUtilityFunctions:
             validate_compression_level("abc")
 
         with pytest.raises(
-            argparse.ArgumentTypeError, match="Invalid compression level: '1.5'"
+            argparse.ArgumentTypeError, match=r"Invalid compression level: '1\\.5'"
         ):
             validate_compression_level("1.5")