diff --git a/.github/workflows/cmake-build.yml b/.github/workflows/cmake-build.yml
index 53cba18d..e429efa8 100644
--- a/.github/workflows/cmake-build.yml
+++ b/.github/workflows/cmake-build.yml
@@ -35,7 +35,7 @@ jobs:
       - name: Setup CMake and compiler
         run: |
           sudo apt update
-          sudo apt install -y cmake build-essential
+          sudo apt install -y cmake build-essential mpich libmpich-dev
 
       # Step 3: Set defaults for inputs when triggered by push/PR
       - name: Set default build variables