diff --git a/backend/example.env b/backend/example.env
index bf36a3ea2..a684374fb 100644
--- a/backend/example.env
+++ b/backend/example.env
@@ -7,6 +7,7 @@ LOG_FOLDER_PATH=./logs/
 # Default log file max size is 10 MB
 LOG_FILE_MAX_SIZE=10485760
 MODE=dev
+RECAPTCHA_SECRET=6LeIxAcTAAAAAGG-vFI1TnRWxMZNFuojJ4WifJWe
 # You can also use the format mongodb://username:password@host:port or
 # uncomment the following lines if you want to define them separately
 # DB_USERNAME=