diff --git a/platformio/package/pack.py b/platformio/package/pack.py
index 8688d171..2d1eea46 100644
--- a/platformio/package/pack.py
+++ b/platformio/package/pack.py
@@ -42,6 +42,7 @@ class PackagePacker(object):
         ".vscode",
         ".cache",
         "**/.cache",
+        "**/__pycache__",
         # VCS
         ".git/",
         ".hg/",