diff --git a/.envrc b/.envrc
new file mode 100644
index 00000000..4a4726a5
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use_nix
diff --git a/.gitignore b/.gitignore
index bbf46c63..7f1edd86 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,5 +2,4 @@
 /.pre-commit-config.yaml
 /result
 /result-?
-/.envrc
 /.direnv