diff --git a/.gitignore b/.gitignore
index 20177b4..1bfb900 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,7 @@ deps
 *.beam
 *.plt
 *.swp
+*.swo
 erl_crash.dump
 ebin/*.beam
 doc/*.html