diff --git a/pkgs/development/interpreters/mujs/default.nix b/pkgs/development/interpreters/mujs/default.nix
index 5e600a92fb7..a0e23614ebc 100644
--- a/pkgs/development/interpreters/mujs/default.nix
+++ b/pkgs/development/interpreters/mujs/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   pname = "mujs";
-  version = "1.0.7";
+  version = "1.0.9";
 
   src = fetchurl {
     url = "https://mujs.com/downloads/mujs-${version}.tar.xz";
-    sha256 = "1ilhay15z4k7mlzs6g2d00snivin7vp72dfw5wwpmc0x70jr31l2";
+    sha256 = "sha256-zKjWafQtO2OEPelF370s5KkArbT+gQv3lQQpYdGw6HY=";
   };
 
   buildInputs = [ readline ];