diff --git a/nix/sources.json b/nix/sources.json
index f898397..ca3910f 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -17,10 +17,10 @@
         "homepage": "",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "b681065d0919f7eb5309a93cea2cfa84dec9aa88",
-        "sha256": "1sd5hq0jw3g9la4w4q63rnrzd6nihi3kqpszldb0n8ws523pbbks",
+        "rev": "4dc2fc4e62dbf62b84132fe526356fbac7b03541",
+        "sha256": "10sm236ix9v0qaih2pvfdzw8vjg1w4z11fjkkrzknn4x98gnaa8n",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/b681065d0919f7eb5309a93cea2cfa84dec9aa88.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/4dc2fc4e62dbf62b84132fe526356fbac7b03541.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "unstable": {
@@ -29,10 +29,10 @@
         "homepage": "",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "55d15ad12a74eb7d4646254e13638ad0c4128776",
-        "sha256": "16lsqai9kv1kkz6xrzgpxrns0b5fynx2l57p8nhhi2krhl5awprk",
+        "rev": "d0797a04b81caeae77bcff10a9dde78bc17f5661",
+        "sha256": "0yq6kiphqf4b0h9rkpdrmqh73ws6gxdn02z74i402z8h6lji6jwh",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/55d15ad12a74eb7d4646254e13638ad0c4128776.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/d0797a04b81caeae77bcff10a9dde78bc17f5661.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     }
 }