diff --git a/specs/openapi.json b/specs/openapi.json
index 84774c6..cefd265 100644
--- a/specs/openapi.json
+++ b/specs/openapi.json
@@ -7383,7 +7383,10 @@
                     "contentEncoding": "base64"
                   },
                   "bio": {
-                    "type": "string",
+                    "type": [
+                      "string",
+                      "null"
+                    ],
                     "maxLength": 190
                   },
                   "banner": {
diff --git a/specs/openapi_preview.json b/specs/openapi_preview.json
index 6f8fb58..8cbd38c 100644
--- a/specs/openapi_preview.json
+++ b/specs/openapi_preview.json
@@ -7383,7 +7383,10 @@
                     "contentEncoding": "base64"
                   },
                   "bio": {
-                    "type": "string",
+                    "type": [
+                      "string",
+                      "null"
+                    ],
                     "maxLength": 190
                   },
                   "banner": {