diff --git a/.gitignore b/.gitignore
index 0e7cb19f2d19..85b94d882521 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,3 +23,6 @@ __pycache__
 
 # generated by pkgs/common-updater/update-script.nix
 update-git-commits.txt
+
+# JetBrains IDEA module declaration file
+/nixpkgs.iml