diff --git a/build.py b/build.py
index e16c8e8..41574ab 100644
--- a/build.py
+++ b/build.py
@@ -49,7 +49,7 @@ def exclusion(tarinfo):
     # exclude certain folders/files
     pathname = tarinfo.name
     if search(
-        r"/\.|\\\.|__pycache__|pyproject.toml|requirements|build.py|tar.gz", pathname
+        r"/\.|\\\.|__pycache__|pyproject\.toml|requirements|build\.py|tar\.gz", pathname
     ):
         return None