diff --git a/exchange b/exchange
index 2cd0b0e..8a92c43 100755
--- a/exchange
+++ b/exchange
@@ -8,6 +8,7 @@ code=
 client_id=
 client_secret=
 redirect_uri=
+source .env
 
 http --form POST "https://api.monzo.com/oauth2/token" \
     "grant_type=authorization_code" \