diff --git a/pkgs/development/tools/build-managers/moon/default.nix b/pkgs/development/tools/build-managers/moon/default.nix
index b8dc4d27b2b9..b01cfc97b919 100644
--- a/pkgs/development/tools/build-managers/moon/default.nix
+++ b/pkgs/development/tools/build-managers/moon/default.nix
@@ -9,16 +9,16 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "moon";
-  version = "1.20.1";
+  version = "1.21.4";
 
   src = fetchFromGitHub {
     owner = "moonrepo";
     repo = pname;
     rev = "v${version}";
-    hash = "sha256-wAY5jifyjK5jp5nlrwt/Krp96in06SnayTKx8inrf0A=";
+    hash = "sha256-E+B5HBMmYZodZuVNkrwgvN6yeko1Qx4BeAeP6b9vu/0=";
   };
 
-  cargoHash = "sha256-qfDw+zmhk0M3gItiB7qfgiQCBRvOYBOirJFMyNRr714=";
+  cargoHash = "sha256-X7R0Tgn3Ekc3QkJiiLfQqUPf3tmf9oYoakUfoONEGZs=";
 
   env = {
     RUSTFLAGS = "-C strip=symbols";