diff --git a/api/openapi-spec/swagger.json b/api/openapi-spec/swagger.json
index b73823d2903..99cda9e66ac 100644
--- a/api/openapi-spec/swagger.json
+++ b/api/openapi-spec/swagger.json
@@ -17935,7 +17935,7 @@
   },
   "info": {
     "title": "Kubernetes",
-    "version": "v1.18.0"
+    "version": "unversioned"
   },
   "paths": {
     "/api/": {
diff --git a/hack/update-openapi-spec.sh b/hack/update-openapi-spec.sh
index adfe9f27509..bf632005fe4 100755
--- a/hack/update-openapi-spec.sh
+++ b/hack/update-openapi-spec.sh
@@ -86,7 +86,7 @@ fi
 
 kube::log::status "Updating " "${OPENAPI_ROOT_DIR}"
 
-curl -w "\n" -fs "${API_HOST}:${API_PORT}/openapi/v2" | jq -S . > "${OPENAPI_ROOT_DIR}/swagger.json"
+curl -w "\n" -fs "${API_HOST}:${API_PORT}/openapi/v2" | jq -S '.info.version="unversioned"' > "${OPENAPI_ROOT_DIR}/swagger.json"
 
 kube::log::status "SUCCESS"