diff --git a/pkgs/development/libraries/expat/default.nix b/pkgs/development/libraries/expat/default.nix
index 3bfc215aea7b..d44783079f0f 100644
--- a/pkgs/development/libraries/expat/default.nix
+++ b/pkgs/development/libraries/expat/default.nix
@@ -7,11 +7,11 @@
 
 stdenv.mkDerivation rec {
   pname = "expat";
-  version = "2.4.1";
+  version = "2.4.2";
 
   src = fetchurl {
     url = "https://github.com/libexpat/libexpat/releases/download/R_${lib.replaceStrings ["."] ["_"] version}/${pname}-${version}.tar.xz";
-    sha256 = "sha256-zwMtDbqbkoY2VI4ysyei1msaq2PE9KE90TLC0dLy+2o=";
+    sha256 = "sha256-vC/1j0nCmqx7/3BabBZ6gh8mxRIHn/CKxDL9D9ybsZk=";
   };
 
   outputs = [ "out" "dev" ]; # TODO: fix referrers