diff --git a/nix/sources.json b/nix/sources.json
index 1f1c345e..4a91b149 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -98,10 +98,10 @@
         "homepage": null,
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "78cd22c1b8604de423546cd49bfe264b786eca13",
-        "sha256": "1zqpnzmxmh0r7l91ybpdabcpd6mfpw6bm993qk5kcs8i265alp44",
+        "rev": "ff377a78794d412a35245e05428c8f95fef3951f",
+        "sha256": "1ilabb6zsrws5vlpwrsnzcwvvczynqarwk4ajz86xmg7ml9ks98p",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/78cd22c1b8604de423546cd49bfe264b786eca13.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/ff377a78794d412a35245e05428c8f95fef3951f.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "obelisk": {