diff --git a/.gitignore b/.gitignore
index 001b8be2..b23033c6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,6 @@ src/y.tab.h
 lib/libpicrin.so
 lib/libpicrin.so.dSYM
 .dir-locals.el
+GPATH
+GRTAGS
+GTAGS