diff --git a/pkgs/os-specific/linux/rtl8821cu/default.nix b/pkgs/os-specific/linux/rtl8821cu/default.nix
index 9d83d4b4c28a1..440a66ca341f2 100644
--- a/pkgs/os-specific/linux/rtl8821cu/default.nix
+++ b/pkgs/os-specific/linux/rtl8821cu/default.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation {
   pname = "rtl8821cu";
-  version = "${kernel.version}-unstable-2024-05-03";
+  version = "${kernel.version}-unstable-2024-09-27";
 
   src = fetchFromGitHub {
     owner = "morrownr";
     repo = "8821cu-20210916";
-    rev = "3eacc28b721950b51b0249508cc31e6e54988a0c";
-    hash = "sha256-JP7mvwhnKqmkb/B0l4vhc11TBjjUA1Ubzbj/IVEXvBM=";
+    rev = "2dce552dc6aa0cdab427bfa810c3df002eab0078";
+    hash = "sha256-8hGAfZyDCGl0RnPnYjc7iMEulZvoIGe2ghfIfoiz7ZI=";
   };
 
   hardeningDisable = [ "pic" ];
@@ -18,9 +18,9 @@ stdenv.mkDerivation {
 
   prePatch = ''
     substituteInPlace ./Makefile \
-      --replace /lib/modules/ "${kernel.dev}/lib/modules/" \
-      --replace /sbin/depmod \# \
-      --replace '$(MODDESTDIR)' "$out/lib/modules/${kernel.modDirVersion}/kernel/net/wireless/"
+      --replace-fail /lib/modules/ "${kernel.dev}/lib/modules/" \
+      --replace-fail /sbin/depmod \# \
+      --replace-fail '$(MODDESTDIR)' "$out/lib/modules/${kernel.modDirVersion}/kernel/net/wireless/"
   '';
 
   preInstall = ''