diff --git a/winbuild/build_prepare.py b/winbuild/build_prepare.py
index 19552f3c787..89b2daad005 100644
--- a/winbuild/build_prepare.py
+++ b/winbuild/build_prepare.py
@@ -152,9 +152,9 @@ def cmd_msbuild(
         "libs": [r"*.lib"],
     },
     "xz": {
-        "url": SF_PROJECTS + "/lzmautils/files/xz-5.4.2.tar.gz/download",
-        "filename": "xz-5.4.2.tar.gz",
-        "dir": "xz-5.4.2",
+        "url": SF_PROJECTS + "/lzmautils/files/xz-5.4.3.tar.gz/download",
+        "filename": "xz-5.4.3.tar.gz",
+        "dir": "xz-5.4.3",
         "license": "COPYING",
         "build": [
             *cmds_cmake("liblzma", "-DBUILD_SHARED_LIBS:BOOL=OFF"),