diff --git a/.link-checker-config.json b/.link-checker-config.json
index a07bfa94..c844e22c 100644
--- a/.link-checker-config.json
+++ b/.link-checker-config.json
@@ -11,6 +11,9 @@
     },
     {
       "pattern": "^https://a2aprotocol.ai/"
+    },
+    {
+      "pattern": "^https://www.gnu.org/"
     }
   ],
   "aliveStatusCodes": [