diff --git a/nix/sources.json b/nix/sources.json
index 871c354..72637c7 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -36,10 +36,12 @@
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "mcwhirter-io": {
-        "sha256": "1mng09gf9h25w6xnjrabq9zqi28w71ili0haqjqfhbyf3cg54zyy",
+        "branch": "consensus",
+        "rev": "a53a2f8a8a23eb0579ba6d0ec1c6e749bfcf8467",
+        "sha256": "1b72841hbj6wqsb37ma4y148lx287qjmcbr9p1dbzras6k4xvdlz",
         "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"
+        "url": "https://source.mcwhirter.io/craige/mcwhirter.io/archive/a53a2f8a8a23eb0579ba6d0ec1c6e749bfcf8467.tar.gz",
+        "url_template": "https://source.mcwhirter.io/craige/mcwhirter.io/archive/<rev>.tar.gz"
     },
     "niv": {
         "branch": "master",