diff --git a/shell.nix b/shell.nix
index 047e17d..b7b7400 100644
--- a/shell.nix
+++ b/shell.nix
@@ -1,10 +1,10 @@
 let
   pkgs = import (builtins.fetchTarball
-    "https://github.com/NixOS/nixpkgs/archive/056faf24027e12f0ba6edebe299ed136e030d29a.tar.gz") {
+    "https://github.com/NixOS/nixpkgs/archive/ec9ef366451af88284d7dfd18ee017b7e86a0710.tar.gz") {
       overlays = [ rust ];
     };
   rust = import (builtins.fetchTarball
-    "https://github.com/oxalica/rust-overlay/archive/f61820fa2c3844d6940cce269a6afdec30aa2e6c.tar.gz");
+    "https://github.com/oxalica/rust-overlay/archive/026e8fedefd6b167d92ed04b195c658d95ffc7a5.tar.gz");
 
   rust-nightly =
     pkgs.rust-bin.selectLatestNightlyWith (toolchain: toolchain.minimal);