diff --git a/nix/sources.json b/nix/sources.json
index 9bd4720e..7bc7c264 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -5,10 +5,10 @@
         "homepage": "",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "1066e01707763381ee27e9e1b9758244b3661a4c",
-        "sha256": "1f1c0p33bly7ppm32h8bp1cg01ilpc08w89d57n936fhikrkdflw",
+        "rev": "ef72617c4a1e14ddb2254b2199bd0103c6274bf5",
+        "sha256": "0p52ds4qvgb5p0kfxzmbla1c65as1b3391dqqj89qm37cb7nb5p1",
         "type": "tarball",
-        "url": "https://github.com/nix-community/home-manager/archive/1066e01707763381ee27e9e1b9758244b3661a4c.tar.gz",
+        "url": "https://github.com/nix-community/home-manager/archive/ef72617c4a1e14ddb2254b2199bd0103c6274bf5.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "kassandra": {
@@ -35,10 +35,10 @@
         "homepage": "",
         "owner": "nixos",
         "repo": "nixos-hardware",
-        "rev": "46a68df837414dcdfb1c240c88d5fff1b6ef805c",
-        "sha256": "1zi93w8kzsj0d2759hjbay3zrh0z62k31s56khjyixi6laxyz83a",
+        "rev": "1b4ce6426f089b0650f065c7508a45b49a2b2263",
+        "sha256": "1jys22izs9cckx9c6cfl6wbkc9821c1rkz9samlbzdl08ah41dyl",
         "type": "tarball",
-        "url": "https://github.com/nixos/nixos-hardware/archive/46a68df837414dcdfb1c240c88d5fff1b6ef805c.tar.gz",
+        "url": "https://github.com/nixos/nixos-hardware/archive/1b4ce6426f089b0650f065c7508a45b49a2b2263.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "nixos-mailserver": {
@@ -53,10 +53,10 @@
         "homepage": null,
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "edb26126d98bc696f4f3e206583faa65d3d6e818",
-        "sha256": "1cl4ka4kk7kh3bl78g06dhiidazf65q8miyzaxi9930d6gwyzkci",
+        "rev": "d105075a1fd870b1d1617a6008cb38b443e65433",
+        "sha256": "1jcs44wn0s6mlf2jps25bvcai1rij9b2dil6zcj8zqwf2i8xmqjh",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/edb26126d98bc696f4f3e206583faa65d3d6e818.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/d105075a1fd870b1d1617a6008cb38b443e65433.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "nixpkgs-master": {
@@ -65,10 +65,10 @@
         "homepage": null,
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "34ad166a830d3ac1541dcce571c52231f2f0865a",
-        "sha256": "1jvi1562x3kq65w642vfimpszv65zbc7c2nv8gakhzcx4n3f47xq",
+        "rev": "d278891db5598a24c658acb4156aa0bab0fa2f78",
+        "sha256": "0890a5yiy9ng8cnszdvc6xzfq1jjjnifmx8x41q83rnm2yrijjbw",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/34ad166a830d3ac1541dcce571c52231f2f0865a.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/d278891db5598a24c658acb4156aa0bab0fa2f78.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "obelisk": {
@@ -101,10 +101,10 @@
         "homepage": null,
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "1dc37370c489b610f8b91d7fdd40633163ffbafd",
-        "sha256": "1qvfxf83rya7shffvmy364p79isxmzcq4dxa0lkm5b3ybicnd8f4",
+        "rev": "34ad166a830d3ac1541dcce571c52231f2f0865a",
+        "sha256": "1jvi1562x3kq65w642vfimpszv65zbc7c2nv8gakhzcx4n3f47xq",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/1dc37370c489b610f8b91d7fdd40633163ffbafd.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/34ad166a830d3ac1541dcce571c52231f2f0865a.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     }
 }