diff --git a/.hgignore b/.hgignore
index 3fbfa1d..a9f7d3b 100644
--- a/.hgignore
+++ b/.hgignore
@@ -5,6 +5,7 @@ mode:regex
 ^clientpack/
 
 ^_dist/
+^node_modules/
 ^vendor/
 
 ^nmdc-webfrontend$