diff --git a/nix/sources.json b/nix/sources.json
index f966bf0..ec973b7 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -12,15 +12,15 @@
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "daedalus": {
-        "branch": "release/3.3.2",
+        "branch": "release/4.0.4",
         "description": "The open source cryptocurrency wallet for ada, built to grow with the community",
         "homepage": "https://daedaluswallet.io/",
         "owner": "input-output-hk",
         "repo": "daedalus",
-        "rev": "49bbd5f840ccf8af7f2e8b7e7012a252305e11d2",
-        "sha256": "1kyniy153bdcr3ci5p80fkash42j0ksk54ms0sw1kygghihyx5qf",
+        "rev": "bad666e2de2edebe71915a334cc5ea387be88428",
+        "sha256": "0z3psns1jpnsqhry7z9rxvqzf2jlh19wz5iw14g108rx4s947zxq",
         "type": "tarball",
-        "url": "https://github.com/input-output-hk/daedalus/archive/49bbd5f840ccf8af7f2e8b7e7012a252305e11d2.tar.gz",
+        "url": "https://github.com/input-output-hk/daedalus/archive/bad666e2de2edebe71915a334cc5ea387be88428.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "iohk-nix": {