diff --git a/bucket/mingw-mstorsjo-llvm-ucrt.json b/bucket/mingw-mstorsjo-llvm-ucrt.json
index e44ff9d109..b516e5b321 100644
--- a/bucket/mingw-mstorsjo-llvm-ucrt.json
+++ b/bucket/mingw-mstorsjo-llvm-ucrt.json
@@ -1,23 +1,23 @@
 {
-    "version": "21.1.2-20250924",
+    "version": "21.1.3-20251007",
     "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/20250924/llvm-mingw-20250924-ucrt-x86_64.zip",
-            "hash": "d2719495e711f5d07cb0781be5eb987ba549b07075578e34387dd127eb1341e8",
-            "extract_dir": "llvm-mingw-20250924-ucrt-x86_64"
+            "url": "https://github.com/mstorsjo/llvm-mingw/releases/download/20251007/llvm-mingw-20251007-ucrt-x86_64.zip",
+            "hash": "9b98a1331b9787bbec5da2a2b78704809b91d807c26acc08b9d377292b92baf0",
+            "extract_dir": "llvm-mingw-20251007-ucrt-x86_64"
         },
         "32bit": {
-            "url": "https://github.com/mstorsjo/llvm-mingw/releases/download/20250924/llvm-mingw-20250924-ucrt-i686.zip",
-            "hash": "8c023358f708906d0d75536c766df876ba383f67e568af1df903a9bb0462f44c",
-            "extract_dir": "llvm-mingw-20250924-ucrt-i686"
+            "url": "https://github.com/mstorsjo/llvm-mingw/releases/download/20251007/llvm-mingw-20251007-ucrt-i686.zip",
+            "hash": "d2d14ac47db9b64371bab1784511e6ec112497694ba36f79d25e96b1b959d6e0",
+            "extract_dir": "llvm-mingw-20251007-ucrt-i686"
         },
         "arm64": {
-            "url": "https://github.com/mstorsjo/llvm-mingw/releases/download/20250924/llvm-mingw-20250924-ucrt-aarch64.zip",
-            "hash": "0274ec5c504f440493ce85966dd3e48b857687b28d1ca64d7e0ec7fefe1bdeb3",
-            "extract_dir": "llvm-mingw-20250924-ucrt-aarch64"
+            "url": "https://github.com/mstorsjo/llvm-mingw/releases/download/20251007/llvm-mingw-20251007-ucrt-aarch64.zip",
+            "hash": "b3384bb167805fde7c82e9a0e3f62d92d7f5b80a2c87a05babadddd49b31062c",
+            "extract_dir": "llvm-mingw-20251007-ucrt-aarch64"
         }
     },
     "post_install": "Copy-Item \"$dir\\bin\\mingw32-make.exe\" \"$dir\\bin\\make.exe\"",