diff --git a/nix/sources.json b/nix/sources.json
index a0671ec..d2084b1 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -1,14 +1,14 @@
 {
     "cardano-node": {
-        "branch": "refs/tags/1.34.0",
+        "branch": "refs/tags/1.34.1",
         "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": "c23d5d319cd3276575c6ac32458516232e8d2c48",
-        "sha256": "1hnn21snprbs8c57y6rfqgkv3vxh96s6cbfydh83blgw31gfhxfq",
+        "rev": "73f9a746362695dc2cb63ba757fbcabb81733d23",
+        "sha256": "1hh53whcj5y9kw4qpkiza7rmkniz18r493vv4dzl1a8r5fy3b2bv",
         "type": "tarball",
-        "url": "https://github.com/input-output-hk/cardano-node/archive/c23d5d319cd3276575c6ac32458516232e8d2c48.tar.gz",
+        "url": "https://github.com/input-output-hk/cardano-node/archive/73f9a746362695dc2cb63ba757fbcabb81733d23.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "daedalus": {