diff --git a/.gitignore b/.gitignore
index 43403e1e..d150c785 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,7 +4,8 @@
 *.a
 *.so
 *.pyc
+*.pyo
 getarch
 getos
 sems
-sems-stats
\ No newline at end of file
+sems-stats