diff --git a/nix/sources.json b/nix/sources.json
index 16e51cf..5cd2206 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -1,14 +1,14 @@
 {
     "cardano-node": {
-        "branch": "refs/tags/1.32.1",
+        "branch": "refs/tags/1.33.0",
         "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": "4f65fb9a27aa7e3a1873ab4211e412af780a3648",
-        "sha256": "00k9fqrm0gphjji23x0nc9z6bqh8bqrncgivn3mi3csacjzicrrx",
+        "rev": "814df2c146f5d56f8c35a681fe75e85b905aed5d",
+        "sha256": "1hr00wqzmcyc3x0kp2hyw78rfmimf6z4zd4vv85b9zv3nqbjgrik",
         "type": "tarball",
-        "url": "https://github.com/input-output-hk/cardano-node/archive/4f65fb9a27aa7e3a1873ab4211e412af780a3648.tar.gz",
+        "url": "https://github.com/input-output-hk/cardano-node/archive/814df2c146f5d56f8c35a681fe75e85b905aed5d.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "daedalus": {