diff --git a/pkgs/development/libraries/mpdecimal/default.nix b/pkgs/development/libraries/mpdecimal/default.nix
index 687abab7d45b..1041100f9f8e 100644
--- a/pkgs/development/libraries/mpdecimal/default.nix
+++ b/pkgs/development/libraries/mpdecimal/default.nix
@@ -52,6 +52,6 @@ stdenv.mkDerivation rec {
 
     maintainers = with lib.maintainers; [ kaction ];
 
-    platforms = lib.platforms.unix;
+    platforms = lib.platforms.unix ++ lib.platforms.windows;
   };
 }