diff --git a/pkgs/development/tools/lightningcss/default.nix b/pkgs/development/tools/lightningcss/default.nix
index 297d62e1fd35..c31f80e27053 100644
--- a/pkgs/development/tools/lightningcss/default.nix
+++ b/pkgs/development/tools/lightningcss/default.nix
@@ -6,16 +6,16 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "lightningcss";
-  version = "1.21.3";
+  version = "1.21.5";
 
   src = fetchFromGitHub {
     owner = "parcel-bundler";
     repo = "lightningcss";
     rev = "refs/tags/v${version}";
-    sha256 = "0IBXniW8ybqgYO9MA9VEYgPpv9Wte8/tJ9fvOXPURUk=";
+    sha256 = "PEYrXykSdmLKhbhDgQNCQvp9wWos86WjWGZk3V84pew=";
   };
 
-  cargoHash = "sha256-etyxE1Pkikyr+fGEGhefLMnkUwP5O0xcgTsE/6u2Jtw=";
+  cargoHash = "sha256-iCMG5Vfewotb5C0Gwtz/Py9B1hD28ssSy7C5ZiicFbU=";
 
   buildFeatures = [
     "cli"