diff --git a/flake.nix b/flake.nix
index 7bcb7d4..24538f8 100644
--- a/flake.nix
+++ b/flake.nix
@@ -50,6 +50,9 @@
             };
             clippy = {
               enable = true;
+              settings = {
+                denyWarnings = true;
+              };
               packageOverrides = {
                 cargo = rustPackageDev;
                 clippy = rustPackageDev;