diff --git a/pkgs/by-name/un/undmg/package.nix b/pkgs/by-name/un/undmg/package.nix
index 868062c3dde2..480d49f62588 100644
--- a/pkgs/by-name/un/undmg/package.nix
+++ b/pkgs/by-name/un/undmg/package.nix
@@ -9,6 +9,9 @@
   pkg-config,
 }:
 
+let
+  zlib' = zlib.override { static = false; };
+in
 stdenv.mkDerivation {
   pname = "undmg";
   version = "1.1.0-unstable-2024-08-02";
@@ -23,7 +26,7 @@ stdenv.mkDerivation {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [
-    zlib
+    zlib'
     bzip2
     lzfse
     xz