diff --git a/pkgs/os-specific/darwin/apple-source-releases/libresolv/package.nix b/pkgs/os-specific/darwin/apple-source-releases/libresolv/package.nix
index 8bfdeb6bfa27..285ee3b616e3 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/libresolv/package.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/libresolv/package.nix
@@ -1,15 +1,15 @@
 {
   lib,
-  apple-sdk_11,
+  apple-sdk,
   mkAppleDerivation,
 }:
 
 let
-  configd = apple-sdk_11.sourceRelease "configd";
-  Libinfo = apple-sdk_11.sourceRelease "Libinfo";
+  configd = apple-sdk.sourceRelease "configd";
+  Libinfo = apple-sdk.sourceRelease "Libinfo";
 
   # `arpa/nameser_compat.h` is included in the Libc source release instead of libresolv.
-  Libc = apple-sdk_11.sourceRelease "Libc";
+  Libc = apple-sdk.sourceRelease "Libc";
 in
 mkAppleDerivation {
   releaseName = "libresolv";
@@ -27,13 +27,6 @@ mkAppleDerivation {
     ln -s "$NIX_BUILD_TOP/$sourceRoot/nameser.h" "$sourceRoot/arpa/nameser.h"
   '';
 
-  # Remove unsupported availability annotations to support SDK without updated availability headers.
-  postPatch = ''
-    substituteInPlace dns_util.h \
-      --replace-fail 'API_DEPRECATED_BEGIN("dns_util is deprecated.", macos(10.0, 13.0), ios(1.0, 16.0), watchos(1.0, 9.0), tvos(1.0, 16.0))' "" \
-      --replace-fail API_DEPRECATED_END ""
-  '';
-
   env.NIX_CFLAGS_COMPILE = "-I${configd}/dnsinfo -I${Libinfo}/lookup.subproj";
 
   postInstall = ''