diff --git a/nix/sources.json b/nix/sources.json
index 78a99c7d..73a59ab8 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -65,10 +65,10 @@
         "homepage": null,
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "ab3adfe1c769c22b6629e59ea0ef88ec8ee4563f",
-        "sha256": "1m4wvrrcvif198ssqbdw897c8h84l0cy7q75lyfzdsz9khm1y2n1",
+        "rev": "47fbd1e4134bd1314c3753f1c13368d10063ea85",
+        "sha256": "1bs8dbjn9p13mwl5yfx8vpkvyclqcgh6251n5jjy6nh3f6v59lrf",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/ab3adfe1c769c22b6629e59ea0ef88ec8ee4563f.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/47fbd1e4134bd1314c3753f1c13368d10063ea85.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "obelisk": {
@@ -89,10 +89,10 @@
         "homepage": null,
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "7c399a4ee080f33cc500a3fda33af6fccfd617bd",
-        "sha256": "0vqljvz5yrc8i3nj3d5xiiv475yydscckfc9z0hpran9q2rh4md1",
+        "rev": "fce7562cf46727fdaf801b232116bc9ce0512049",
+        "sha256": "14rvi69ji61x3z88vbn17rg5vxrnw2wbnanxb7y0qzyqrj7spapx",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/7c399a4ee080f33cc500a3fda33af6fccfd617bd.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/fce7562cf46727fdaf801b232116bc9ce0512049.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     }
 }