diff --git a/pkg/swagger/docs.go b/pkg/swagger/docs.go
index 5f2802e59..eac2622f5 100644
--- a/pkg/swagger/docs.go
+++ b/pkg/swagger/docs.go
@@ -10495,7 +10495,8 @@ const docTemplate = `{
                 },
                 "username": {
                     "description": "The username of the member. We use this to prevent automated user id entering.",
-                    "type": "string"
+                    "type": "string",
+                    "minLength": 1
                 }
             }
         },
diff --git a/pkg/swagger/swagger.json b/pkg/swagger/swagger.json
index 1fbcbbcc4..645ebb2cb 100644
--- a/pkg/swagger/swagger.json
+++ b/pkg/swagger/swagger.json
@@ -10487,7 +10487,8 @@
                 },
                 "username": {
                     "description": "The username of the member. We use this to prevent automated user id entering.",
-                    "type": "string"
+                    "type": "string",
+                    "minLength": 1
                 }
             }
         },
diff --git a/pkg/swagger/swagger.yaml b/pkg/swagger/swagger.yaml
index 0c82df001..1e1bbc818 100644
--- a/pkg/swagger/swagger.yaml
+++ b/pkg/swagger/swagger.yaml
@@ -1223,6 +1223,7 @@ definitions:
       username:
         description: The username of the member. We use this to prevent automated
           user id entering.
+        minLength: 1
         type: string
     type: object
   models.TeamProject: