diff --git a/.env.example b/.env.example
index 21f4903a..c7f38c41 100644
--- a/.env.example
+++ b/.env.example
@@ -55,6 +55,8 @@ VITE_BOOTSTRAPURL=https://dev4.4nkweb.com/ws/
 SUCCES='4242 4242 4242 4242'
 DECLINED='4000 0025 0000 3155'
 
+SIGNER_API_KEY=your_signer_api_key_here
+
 # ================================= /!\ sensible ========================
 
 IDNOT_API_KEY=