diff --git a/nix/sources.json b/nix/sources.json
index 87261be..4ea7418 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -1,14 +1,14 @@
 {
     "cardano-node": {
-        "branch": "pioneer-3",
+        "branch": "master",
         "description": "The core component that is used to participate in a Cardano decentralised blockchain.",
         "homepage": "https://cardano.org",
         "owner": "input-output-hk",
         "repo": "cardano-node",
-        "rev": "522b4f4fb3bf1abcab28c905b70ff751cd71bde2",
-        "sha256": "10ppxdyll0vd0k4jb223md94594r9l03sqgjd59jh791rzvhwfrv",
+        "rev": "044e82d68a5e5d05258c93eda6c00d8541e4d977",
+        "sha256": "0ds1k350n84qq8sbdpin0fkbsk8pq5b7hyv23yqkslzvrgdh400g",
         "type": "tarball",
-        "url": "https://github.com/input-output-hk/cardano-node/archive/522b4f4fb3bf1abcab28c905b70ff751cd71bde2.tar.gz",
+        "url": "https://github.com/input-output-hk/cardano-node/archive/044e82d68a5e5d05258c93eda6c00d8541e4d977.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "niv": {