diff --git a/.gitignore b/.gitignore
index 9b3d4120a..214fff1dc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,6 +18,7 @@ hs_err_pid*
 *.log
 .mine*
 *.json
+*.hmd
 
 HMCLAPI/build/
 HMCL/build/