diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 37a20f7..cc7f161 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -53,7 +53,6 @@ jobs:
       CARGO_BUILD_TARGET: ${{ matrix.target }}
       CARGO_TERM_COLOR: always
       MACOSX_DEPLOYMENT_TARGET: 10.12
-      PKG_CONFIG_SYSROOT_DIR: /
 
     steps:
       - name: checkout
@@ -72,6 +71,13 @@ jobs:
             sudo tee -a /etc/apt/sources.list >/dev/null
           done
 
+      - name: cache QEMU and AArch64 cross compiler
+        if: startsWith(matrix.target, 'aarch64-unknown-linux')
+        uses: awalsh128/cache-apt-pkgs-action@latest
+        with:
+          packages: qemu-user gcc-aarch64-linux-gnu libc6:arm64
+          version: 1.0
+        
       - name: cache musl development files
         if: endsWith(matrix.target, '-musl')
         uses: awalsh128/cache-apt-pkgs-action@latest