diff --git a/flake.nix b/flake.nix
index fed26bb..d043b5b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -52,7 +52,8 @@
               && (craneLib.filterCargoSources path type
                 || pkgs.lib.hasSuffix ".wit" path || pkgs.lib.hasSuffix ".witx" path
                 || pkgs.lib.hasSuffix ".js" path || pkgs.lib.hasSuffix ".html" path
-                || pkgs.lib.hasSuffix ".wasm" path || pkgs.lib.hasSuffix ".nu" path);
+                || pkgs.lib.hasSuffix ".wasm" path || pkgs.lib.hasSuffix ".nu" path
+                || pkgs.lib.hasSuffix ".c" path || pkgs.lib.hasSuffix ".patch" path);
         };
         v8Archive = pkgs.fetchurl {
           # deno_core enables rusty_v8's simdutf feature.