diff --git a/bucket/mingw-mstorsjo-llvm-ucrt.json b/bucket/mingw-mstorsjo-llvm-ucrt.json
index 90fce1051a..6b5d77b2c3 100644
--- a/bucket/mingw-mstorsjo-llvm-ucrt.json
+++ b/bucket/mingw-mstorsjo-llvm-ucrt.json
@@ -1,23 +1,23 @@
 {
-    "version": "21.1.7-20251202",
+    "version": "21.1.8-20251216",
     "description": "LLVM toolchain based on mingw-w64. (UCRT, mstorsjo build)",
     "homepage": "https://github.com/mstorsjo/llvm-mingw/",
     "license": "GPL-3.0-or-later,ZPL-2.1,Apache-2.0 WITH LLVM-exception,ISC",
     "architecture": {
         "64bit": {
-            "url": "https://github.com/mstorsjo/llvm-mingw/releases/download/20251202/llvm-mingw-20251202-ucrt-x86_64.zip",
-            "hash": "f2adfc859287f4051abf5c23c7476b16a982d0f8e6c32aa2f929a06535454f4b",
-            "extract_dir": "llvm-mingw-20251202-ucrt-x86_64"
+            "url": "https://github.com/mstorsjo/llvm-mingw/releases/download/20251216/llvm-mingw-20251216-ucrt-x86_64.zip",
+            "hash": "2d96a4b758f7f8deaec5065833fe025aa53cfc5f704d0524002510984da0ccf4",
+            "extract_dir": "llvm-mingw-20251216-ucrt-x86_64"
         },
         "32bit": {
-            "url": "https://github.com/mstorsjo/llvm-mingw/releases/download/20251202/llvm-mingw-20251202-ucrt-i686.zip",
-            "hash": "0b3930be302645cde3789e34239cb5cb7b582961b9d8dc1a44e5e6d04800a4b7",
-            "extract_dir": "llvm-mingw-20251202-ucrt-i686"
+            "url": "https://github.com/mstorsjo/llvm-mingw/releases/download/20251216/llvm-mingw-20251216-ucrt-i686.zip",
+            "hash": "c6b17faa808f412ec8ef2086994b3fc3c16e8c7292bbaf275254d0acfa18f54d",
+            "extract_dir": "llvm-mingw-20251216-ucrt-i686"
         },
         "arm64": {
-            "url": "https://github.com/mstorsjo/llvm-mingw/releases/download/20251202/llvm-mingw-20251202-ucrt-aarch64.zip",
-            "hash": "783ecbd7e9e7b7d238a532ca92c9e7ed9f671939e62c929a7d89dc47dcc064f9",
-            "extract_dir": "llvm-mingw-20251202-ucrt-aarch64"
+            "url": "https://github.com/mstorsjo/llvm-mingw/releases/download/20251216/llvm-mingw-20251216-ucrt-aarch64.zip",
+            "hash": "60c06bd255feb2ef1eb6fce7ee6b307d8f78ee6639660f49861c7c10a8a86164",
+            "extract_dir": "llvm-mingw-20251216-ucrt-aarch64"
         }
     },
     "post_install": "Copy-Item \"$dir\\bin\\mingw32-make.exe\" \"$dir\\bin\\make.exe\"",