diff --git a/pkgs/development/interpreters/janet/default.nix b/pkgs/development/interpreters/janet/default.nix
index bc17750f2535..4601faafb06d 100644
--- a/pkgs/development/interpreters/janet/default.nix
+++ b/pkgs/development/interpreters/janet/default.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   pname = "janet";
-  version = "1.21.0";
+  version = "1.21.1";
 
   src = fetchFromGitHub {
     owner = "janet-lang";
     repo = pname;
     rev = "v${version}";
-    sha256 = "sha256-chVnD5mxnA50yEL65KUYJwpkZ4jPWiLVHHXeeFxtHBo=";
+    sha256 = "sha256-wJwlGliXoj0XmC9qb6SCo8mUy4aqHvJtFiigUB7PFLE=";
   };
 
   # This release fails the test suite on darwin, remove when debugged.