diff --git a/nix/sources.json b/nix/sources.json
index 019cb69..69fe0fa 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -36,7 +36,7 @@
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "mcwhirter-io": {
-        "sha256": "1izx568c152lcgf4ia2zcx83mvcbdr91k9nxqvsvk7y1fs0xk1cv",
+        "sha256": "1mng09gf9h25w6xnjrabq9zqi28w71ili0haqjqfhbyf3cg54zyy",
         "type": "tarball",
         "url": "https://source.mcwhirter.io/craige/mcwhirter.io/archive/consensus.tar.gz",
         "url_template": "https://source.mcwhirter.io/craige/mcwhirter.io/archive/consensus.tar.gz"