diff --git a/pkgs/development/tools/yarn/default.nix b/pkgs/development/tools/yarn/default.nix
index 3384dac54100..154b228e0e11 100644
--- a/pkgs/development/tools/yarn/default.nix
+++ b/pkgs/development/tools/yarn/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   pname = "yarn";
-  version = "1.19.2";
+  version = "1.21.1";
 
   src = fetchzip {
     url = "https://github.com/yarnpkg/yarn/releases/download/v${version}/yarn-v${version}.tar.gz";
-    sha256 = "05sjf7pgdj3hh92j2xxl683frrkiw1rqxs72z3an4gb83nllvi0n";
+    sha256 = "1yw3v62a6309f9hr189870i9jw2a15pkians1nnfjqczzh7r5pih";
   };
 
   buildInputs = [ nodejs ];