diff --git a/.gitignore b/.gitignore
index 629dbfee912fc6eae0b44f319eb18db440b95172..a44cd705d5d46193c988eb1678fed1dc393a8725 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,6 +16,7 @@ cprofile.txt
 # Distribution / packaging
 .Python
 build/
+build_pin2/
 develop-eggs/
 dist/
 downloads/