diff --git a/nix/sources.json b/nix/sources.json
index c8f1315d..aa9fe0a9 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -93,10 +93,10 @@
         "homepage": null,
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "23d5823337f4502dfa17e192d8c53a47cabcb6b4",
-        "sha256": "1zbyyf2710kpjhrss7v59m1gjlriisx5nxvbhjan9vjzx7l64civ",
+        "rev": "efcfe3676268c789e78a22b20a94c00227d20bc8",
+        "sha256": "0qdxgwk4bqy16vxbb43n0245bdisf1l329ax6gd96576l0ya690s",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/23d5823337f4502dfa17e192d8c53a47cabcb6b4.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/efcfe3676268c789e78a22b20a94c00227d20bc8.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "obelisk": {