diff --git a/.github/workflows/build-toolchain-lhmouse.yml b/.github/workflows/build-toolchain-lhmouse.yml
index 004643b6..e2355e4a 100644
--- a/.github/workflows/build-toolchain-lhmouse.yml
+++ b/.github/workflows/build-toolchain-lhmouse.yml
@@ -21,13 +21,13 @@ jobs:
       id: cache
       with:
         path: D:\ucrt64
-        key: mcf_20240801_14.2.0_x64-ucrt
+        key: mcf_20240821_14.2.1_x64-ucrt
     
     - name: Setup Toolchain
       if: steps.cache.outputs.cache-hit != 'true'
       shell: msys2 {0}
       run: |
-        curl -OL https://gcc-mcf.lhmouse.com/mingw-w64-gcc-mcf_20240801_14.2.0_x64-ucrt_ee5ef80a192bb06ebfb22f9a847e73c4328d9a58.7z
+        curl -OL https://gcc-mcf.lhmouse.com/mingw-w64-gcc-mcf_20240821_14.2.1_x64-ucrt_09b612f2101afc42acbb996f524895e0e95b35dd.7z
         7z x *.7z -o/d
         curl -L -o curl-win64-mingw.zip 'https://curl.se/windows/latest.cgi?p=win64-mingw.zip'
         7z e -r curl*.zip -o/d/ucrt64/bin '*.exe' '*.crt'
diff --git a/.github/workflows/curl.yml b/.github/workflows/curl.yml
index c476147a..487f05ba 100644
--- a/.github/workflows/curl.yml
+++ b/.github/workflows/curl.yml
@@ -21,7 +21,7 @@ jobs:
       id: cache
       with:
         path: D:\ucrt64
-        key: mcf_20240801_14.2.0_x64-ucrt
+        key: mcf_20240821_14.2.1_x64-ucrt
     - name: Setup Python
       uses: actions/setup-python@v5
       with:
@@ -73,7 +73,7 @@ jobs:
       id: cache
       with:
         path: D:\ucrt64
-        key: mcf_20240801_14.2.0_x64-ucrt
+        key: mcf_20240821_14.2.1_x64-ucrt
     - name: Build
       env:
         C_INCLUDE_PATH: /opt/include
diff --git a/mcfgthread/PKGBUILD b/mcfgthread/PKGBUILD
index 90a26012..445fb881 100644
--- a/mcfgthread/PKGBUILD
+++ b/mcfgthread/PKGBUILD
@@ -1,6 +1,6 @@
 # Maintainer: nyfair <nyfair2012@gmail.com>
 pkgname=mcfgthread
-pkgver=20240801
+pkgver=20240821
 pkgrel=1
 pkgdesc='MCF thread model'
 arch=('x86_64')