diff --git a/pkgs/development/compilers/open-watcom/v2.nix b/pkgs/development/compilers/open-watcom/v2.nix
index 77606d8a5115..c55ef1f97cc3 100644
--- a/pkgs/development/compilers/open-watcom/v2.nix
+++ b/pkgs/development/compilers/open-watcom/v2.nix
@@ -12,14 +12,14 @@
 
 stdenv.mkDerivation rec {
   pname = "open-watcom-v2";
-  version = "unstable-2022-04-29";
+  version = "unstable-2022-05-03";
   name = "${pname}-unwrapped-${version}";
 
   src = fetchFromGitHub {
     owner = "open-watcom";
     repo = "open-watcom-v2";
-    rev = "520d9d7025b46b926123257b029b3dbce9a96065";
-    sha256 = "aACkkTzOH8F82GPyySjtb7CGozR8OjgzqZVRiNTiS10=";
+    rev = "a927247a40e69261e7d8891b6f002c91450e01f2";
+    sha256 = "/CuPNCEoSjxwYL07b07XqnaAeFZGS8NjXBuj+gFCsOA=";
   };
 
   postPatch = ''