diff --git a/api/src/cors.rs b/api/src/cors.rs
index 1e68fa57..203b7b30 100644
--- a/api/src/cors.rs
+++ b/api/src/cors.rs
@@ -34,7 +34,7 @@ impl Fairing for CORS {
             Err(_) => {
                 response.set_header(Header::new(
                     "Access-Control-Allow-Origin",
-                    "https://zksync-plugin.nethermind.dev",
+                    "https://zksync-plugin.nethermind.dev/",
                 ));
             }
         }