diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index fe6a0da..bf7d7a0 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -103,14 +103,15 @@ jobs:
       - name: Set up problem matching
         uses: ammaraskar/gcc-problem-matcher@master
 
+      - name: Set up environment variables
+        if: matrix.arch == 'arm64'
+        run: |
+          echo "CXX=aarch64-linux-gnu-g++" >> $GITHUB_ENV
+
       - name: Build ${{matrix.configuration}} ${{matrix.arch}} binaries
         run: |
           pushd build
           make config=${{matrix.config}}_${{matrix.arch}} -j$(nproc)
-        if: matrix.arch == 'arm64'  
-        env:
-          CC: aarch64-linux-gnu-gcc
-          CXX: aarch64-linux-gnu-g++
 
       - name: Upload ${{matrix.configuration}} ${{matrix.arch}} binaries
         uses: actions/upload-artifact@v3.1.2