diff --git a/.envrc b/.envrc
index 3e1a0e5c68..1d49d232ce 100644
--- a/.envrc
+++ b/.envrc
@@ -5,7 +5,7 @@
 # or any of the `default.nix` files change. We do this by adding all these files
 # to the nix store and using the store paths as a cache key.
 
-nix_files=$(find . -name default.nix  | grep -v '^./nix' | grep -v '^./dist-newstyle')
+nix_files=$(find . -name '*.nix' | grep -v '^./dist-newstyle')
 for nix_file in $nix_files; do
   watch_file "$nix_file"
 done