diff --git a/flake.nix b/flake.nix
index 9e48821b..5e032ebf 100644
--- a/flake.nix
+++ b/flake.nix
@@ -116,8 +116,8 @@
         name = "nac3-dev-shell";
         buildInputs = with pkgs; [
           packages.x86_64-linux.llvm-nac3
-          clang_12
-          lld_12
+          clang_13
+          lld_13
           cargo
           cargo-insta
           rustc