diff --git a/flake.lock b/flake.lock
index 3d1ad13..2e4fd36 100644
--- a/flake.lock
+++ b/flake.lock
@@ -69,15 +69,16 @@
         ]
       },
       "locked": {
-        "lastModified": 1710359273,
-        "narHash": "sha256-jUEzVqRAwhtwNRbT+UoreNuqypqnAkVL+3K3e6bdQMg=",
+        "lastModified": 1715967582,
+        "narHash": "sha256-qcocX2icqHrGHIj7hfGu4FxlsxJcJQzQX8VRSIba2IA=",
         "owner": "kadena-io",
         "repo": "chainweb-node",
-        "rev": "5ca1ca1bebd814915ce4d476e5852f42ed01fc75",
+        "rev": "c7278dd604da901cabcad35ce2a2eb8512af1a6b",
         "type": "github"
       },
       "original": {
         "owner": "kadena-io",
+        "ref": "hyperlane-merkle-message-id-fixes",
         "repo": "chainweb-node",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index 805f2d9..a6697a3 100644
--- a/flake.nix
+++ b/flake.nix
@@ -18,7 +18,7 @@
     # the pact package from its cabal.project, but a non-"empty" flake overrides it.
     pact-override.follows = "chainweb-node/empty";
     chainweb-node = {
-      url = "github:kadena-io/chainweb-node";
+      url = "github:kadena-io/chainweb-node/hyperlane-merkle-message-id-fixes";
       inputs.pact.follows = "pact-override";
     };