diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..1d953f4
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use nix
diff --git a/util/shell.nix b/shell.nix
similarity index 100%
rename from util/shell.nix
rename to shell.nix