diff --git a/.github/workflows/cmake-tier1.yml b/.github/workflows/cmake-tier1.yml
index 5eef15f..6dba415 100644
--- a/.github/workflows/cmake-tier1.yml
+++ b/.github/workflows/cmake-tier1.yml
@@ -70,6 +70,7 @@ jobs:
             mingw-w64-${{ matrix.arch }}-cmake
             mingw-w64-${{ matrix.arch }}-gcc
             make
+            p7zip
 
       - name: Configure CMake
         shell: msys2 {0}