diff --git a/pkgs/misc/emulators/wine/sources.nix b/pkgs/misc/emulators/wine/sources.nix
index ff26863681de..dd97f286174d 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 = "4.9.3";
-      url = "http://dl.winehq.org/wine/wine-mono/${version}/wine-mono-${version}.msi";
-      sha256 = "0va7nbhvfb52g78s9k3zc6xxwsn5whfyn333s6fdxycp8rkvgxkw";
+      version = "4.9.4";
+      url = "https://dl.winehq.org/wine/wine-mono/${version}/wine-mono-${version}.msi";
+      sha256 = "1p8g45xphxnns7dkg9rbaknarbjy5cjhrngaf0fsgk9z68wgz9ji";
     };
   };