diff --git a/projects/app/src/components/common/secret/HeaderAuthConfig.tsx b/projects/app/src/components/common/secret/HeaderAuthConfig.tsx
index 4ac3656c3..3f1ff4a33 100644
--- a/projects/app/src/components/common/secret/HeaderAuthConfig.tsx
+++ b/projects/app/src/components/common/secret/HeaderAuthConfig.tsx
@@ -307,7 +307,7 @@ const HeaderAuthConfig = ({
                             h={8}
                             bg="myGray.50"
                             placeholder="key"
-                            maxLength={20}
+                            maxLength={64}
                             {...register(`customs.${index}.key`, {
                               required: true
                             })}