diff --git a/.gitignore b/.gitignore
index 1a41704c9be3..6b13e043a92c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,3 +21,6 @@ __pycache__
 
 # generated by pkgs/common-updater/update-script.nix
 update-git-commits.txt
+
+# JetBrains IDEA module declaration file
+/nixpkgs.iml