diff --git a/bucket/mingw-mstorsjo-llvm-ucrt.json b/bucket/mingw-mstorsjo-llvm-ucrt.json
index 03fd7ec70b..4458a3811f 100644
--- a/bucket/mingw-mstorsjo-llvm-ucrt.json
+++ b/bucket/mingw-mstorsjo-llvm-ucrt.json
@@ -1,23 +1,23 @@
 {
-    "version": "18.1.2-20240320",
+    "version": "18.1.3-20240404",
     "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/20240320/llvm-mingw-20240320-ucrt-x86_64.zip",
-            "hash": "44e768d7dd94433b77ba00bf303e94881c1f075e0431cafc2424d8ed4b705e38",
-            "extract_dir": "llvm-mingw-20240320-ucrt-x86_64"
+            "url": "https://github.com/mstorsjo/llvm-mingw/releases/download/20240404/llvm-mingw-20240404-ucrt-x86_64.zip",
+            "hash": "ae8c859561600f2e912fb7263604f4fd7562b349c025be19de4bd850232ba1d5",
+            "extract_dir": "llvm-mingw-20240404-ucrt-x86_64"
         },
         "32bit": {
-            "url": "https://github.com/mstorsjo/llvm-mingw/releases/download/20240320/llvm-mingw-20240320-ucrt-i686.zip",
-            "hash": "765a04ce8de002e3ada17db3a577a19c7af2f745a7c520160c831a918b5da0b0",
-            "extract_dir": "llvm-mingw-20240320-ucrt-i686"
+            "url": "https://github.com/mstorsjo/llvm-mingw/releases/download/20240404/llvm-mingw-20240404-ucrt-i686.zip",
+            "hash": "bbc689cb635f2331a1d1cb4667bb87e9303bead31aa4efea6385f483b4b196c7",
+            "extract_dir": "llvm-mingw-20240404-ucrt-i686"
         },
         "arm64": {
-            "url": "https://github.com/mstorsjo/llvm-mingw/releases/download/20240320/llvm-mingw-20240320-ucrt-aarch64.zip",
-            "hash": "059fa80039206ade320272d673f1d1c556d180b741036790153552b760598332",
-            "extract_dir": "llvm-mingw-20240320-ucrt-aarch64"
+            "url": "https://github.com/mstorsjo/llvm-mingw/releases/download/20240404/llvm-mingw-20240404-ucrt-aarch64.zip",
+            "hash": "a16667eb9157e9c04ee455a4e23f70b8a87f79a1e8f50672d766d2f5b54c91f0",
+            "extract_dir": "llvm-mingw-20240404-ucrt-aarch64"
         }
     },
     "post_install": "Copy-Item \"$dir\\bin\\mingw32-make.exe\" \"$dir\\bin\\make.exe\"",