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/.gitignore b/.gitignore
index 0eebf35..b9ae205 100644
--- a/.gitignore
+++ b/.gitignore
@@ -30,6 +30,8 @@ tags.*
 # Desktop Services Store on macOS
 .DS_Store
 
+/.direnv
+
 # Inbucket binaries
 /client
 /client.exe