diff --git a/pkgs/nixpkgs-pinned.nix b/pkgs/nixpkgs-pinned.nix
index 074420b..dd4f9c1 100644
--- a/pkgs/nixpkgs-pinned.nix
+++ b/pkgs/nixpkgs-pinned.nix
@@ -8,11 +8,11 @@ in
 {
   # To update, run ../helper/fetch-channel REV
   nixpkgs = fetch {
-    rev = "42674051d12540d4a996504990c6ea3619505953";
-    sha256 = "1hz1n1hghilgzk4zlya498xm5lvhsf0r5b49yii7q86h3616fhwy";
+    rev = "21d8e70a69f704a6ab971b2d8265d40cc7bb69b1";
+    sha256 = "0d6ym23bzx8c4ani7lp3k9qmbv7j9bf15vfmiff0f5lbz326bdgi";
   };
   nixpkgs-unstable = fetch {
-    rev = "a31736120c5de6e632f5a0ba1ed34e53fc1c1b00";
-    sha256 = "0xfjizw6w84w1fj47hxzw2vwgjlszzmsjb8k8cgqhb379vmkxjfl";
+    rev = "1179840f9a88b8a548f4b11d1a03aa25a790c379";
+    sha256 = "00jy37wj04bvh299xgal2iik2my9l0nq6cw50r1b2kdfrji8d563";
   };
 }