diff --git a/pkgs/misc/emulators/wine/sources.nix b/pkgs/misc/emulators/wine/sources.nix
index 263b7d116ed..d091bcbd47c 100644
--- a/pkgs/misc/emulators/wine/sources.nix
+++ b/pkgs/misc/emulators/wine/sources.nix
@@ -31,9 +31,9 @@ in rec {
 
     ## see http://wiki.winehq.org/Mono
     mono = fetchurl rec {
-      version = "4.7.1";
+      version = "4.7.3";
       url = "http://dl.winehq.org/wine/wine-mono/${version}/wine-mono-${version}.msi";
-      sha256 = "1ai9qsrgiwd371pyqr3mjaddaczly5d1z68r4lxl3hrkz2vmv39c";
+      sha256 = "0fkd22v2vm3ml76x1ngg42byvmry24xb92vpl4j84zhw6wbq0jnj";
     };
   };