diff --git a/.gitignore b/.gitignore
index 8d11d7278a..90a75ef402 100644
--- a/.gitignore
+++ b/.gitignore
@@ -182,6 +182,9 @@ lcov*.info
 /ext/-test-/win32/dln/dlntest.exp
 /ext/-test-/win32/dln/dlntest.lib
 
+# /ext/-test-/gems
+/ext/-test-/gems
+
 # /ext/etc/
 /ext/etc/constdefs.h