diff --git a/nix/sources.json b/nix/sources.json
index 5479056e..d9c7b5b1 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -77,10 +77,10 @@
         "homepage": "https://github.com/nmattia/niv",
         "owner": "nmattia",
         "repo": "niv",
-        "rev": "2ecfd86b631714b457e56d70dd83fa60435baeb6",
-        "sha256": "01j6727cws8blg1npp54b4w6xa0gpgyzhyws2vqgp8clnlnmqqhi",
+        "rev": "6cf4ff85b903b0528562ebdd704fd4953e653060",
+        "sha256": "0n7kvkgcqczbcbznjf9l382d3y2gm13si2i49ywrzyqwgda70r2v",
         "type": "tarball",
-        "url": "https://github.com/nmattia/niv/archive/2ecfd86b631714b457e56d70dd83fa60435baeb6.tar.gz",
+        "url": "https://github.com/nmattia/niv/archive/6cf4ff85b903b0528562ebdd704fd4953e653060.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "nixfmt": {
@@ -149,10 +149,10 @@
         "homepage": null,
         "owner": "NixOS",
         "repo": "nixpkgs-channels",
-        "rev": "8130f3c1c2bb0e533b5e150c39911d6e61dcecc2",
-        "sha256": "154nrhmm3dk5kmga2w5f7a2l6j79dvizrg4wzbrcwlbvdvapdgkb",
+        "rev": "e2b4abe3c8f2e09adfc6a52007841d1b96c89371",
+        "sha256": "1l3jfr74s7wmx3fk5y76ayazbfclvnr532kg1hypbzydp3n372rz",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs-channels/archive/8130f3c1c2bb0e533b5e150c39911d6e61dcecc2.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs-channels/archive/e2b4abe3c8f2e09adfc6a52007841d1b96c89371.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     }
 }