diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index de920b15..ead84ed4 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -40,7 +40,7 @@ jobs:
         with:
           ruby-version: 3.2
       - name: Install BLAS and LAPACK
-        run: pacman -S --noconfirm mingw-w64-ucrt-x86_64-openblas mingw-w64-ucrt-x86_64-lapack
+        run: pacman -S --noconfirm mingw-w64-ucrt-x86_64-toolchain mingw-w64-ucrt-x86_64-openblas mingw-w64-ucrt-x86_64-lapack
       - name: Build and test with Rake
         run: |
           bundle config --local build.numo-tiny_linalg "--with-opt-lib=C:\msys64\ucrt64\lib --with-opt-include=C:\msys64\ucrt64\include\openblas"