diff --git a/pyproject.toml b/pyproject.toml
index b67006d..203d722 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,7 +12,7 @@ exclude = '''
   | buck-out
   | build
   | dist
-  | .*/doc/source/conf\.py
+  | \.*/doc/source/conf\.py
   | blib2to3
   | tests/data
 )/