diff --git a/pdm_build.py b/pdm_build.py
index 81ada12..76be076 100644
--- a/pdm_build.py
+++ b/pdm_build.py
@@ -32,7 +32,7 @@ def delete_source_files_from_wheel(pth_to_whl: Path):
     tmp_dir.mkdir()
     filename = pth_to_whl.name
     tmp_whl = tmp_dir / filename
-    pattern = re.compile(r".*\.c$|.*detection.py$")
+    pattern = re.compile(r".*\.c$|.*detection.py$|.*\.pyi$")
 
     with zipfile.ZipFile(pth_to_whl, mode="r") as src:
         with zipfile.ZipFile(tmp_whl, mode="w") as dst: