diff --git a/cookbook/specs/spec_add_arbitrum.json b/cookbook/specs/spec_add_arbitrum.json
index 94d817df64..eecaac3087 100644
--- a/cookbook/specs/spec_add_arbitrum.json
+++ b/cookbook/specs/spec_add_arbitrum.json
@@ -48,6 +48,10 @@
                                 "values": [
                                     {
                                         "latest_distance": 288000
+                                    },
+                                    {
+                                        "extension": "archive",
+                                        "expected_value": "0x0"
                                     }
                                 ]
                             }
@@ -100,27 +104,10 @@
                                 "name": "chain-id",
                                 "values": [
                                     {
-                                        "expected_value": "0xa4b1"
-                                    }
-                                ]
-                            },
-                            {
-                                "name": "pruning",
-                                "values": [
-                                    {
-                                        "latest_distance": 288000
+                                        "expected_value": "0xa4ba"
                                     }
                                 ]
                             }
-                        ],
-                        "extensions": [
-                            {
-                                "name": "archive",
-                                "cu_multiplier": 5,
-                                "rule": {
-                                    "block": 284000
-                                }
-                            }
                         ]
                     }
                 ]