diff --git a/.envrc b/.envrc
index c57ee1c4f..2ca233b93 100644
--- a/.envrc
+++ b/.envrc
@@ -4,3 +4,6 @@ if has nix; then
   watch_file nix/{devShell,package,wraptest}.nix
   use flake
 fi
+
+# Source an `.envrc.local` if it exists. You can add your custom changes there.
+[[ -f .envrc.local ]] && source_env .envrc.local