diff --git a/flake.nix b/flake.nix
index 1c0221d..2f24d13 100644
--- a/flake.nix
+++ b/flake.nix
@@ -26,7 +26,7 @@
 		acextract =
 			with import nixpkgs { system = "x86_64-darwin"; };
 			let xcode12 = makeSetupHook {
-				deps = [ (xcodeenv.composeXcodeWrapper { version = "12.2"; }) ];
+				deps = [ (xcodeenv.composeXcodeWrapper { version = "12.3"; }) ];
 			} "${xcbuildHook}/nix-support/setup-hook";
 			in stdenv.mkDerivation {
 				name = "acextract-${lib.substring 0 8 self.inputs.acextract.lastModifiedDate}";
@@ -62,7 +62,7 @@
 			stdenv.mkDerivation {
 				name = "snap-util-${lib.substring 0 8 self.inputs.snap-util.lastModifiedDate}";
 				src = snap-util;
-				nativeBuildInputs = [ (xcodeenv.composeXcodeWrapper { version = "12.2"; }) ];
+				nativeBuildInputs = [ (xcodeenv.composeXcodeWrapper { version = "12.3"; }) ];
 				preBuild = "NIX_CFLAGS_COMPILE='-idirafter ${snapshot-header}/bsd'";
 				installPhase = ''
 					mkdir -p $out/bin