diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 06e00bb64..d42d988b0 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -89,9 +89,9 @@ jobs:
           cmake                                           \
             -B build                                      \
             -G Ninja                                      \
+            -DCMAKE_BUILD_TYPE=${{ matrix.build_type }}   \
             -DPOAC_BUILD_TESTING=ON                       \
             -DPOAC_ENABLE_COVERAGE=${{ matrix.coverage }} \
-            -DCMAKE_BUILD_TYPE=${{ matrix.build_type }}   \
             -DPOAC_DEPS_DIR=${{ runner.temp }}/libs
 
       - name: Build Poac
diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 3c64c15af..ff7ee1ef7 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -14,6 +14,7 @@ jobs:
       matrix:
         os: [ macos-11, macos-12 ]
         build_type: [ Debug, Release ]
+        use_local: [ on, off ]
     env:
       CACHE_KEY_PREFIX: v2-${{ github.ref }}-${{ matrix.os }}-${{ matrix.build_type }}
     steps:
@@ -22,6 +23,10 @@ jobs:
       - name: Install required libraries
         run: brew install openssl ninja boost
 
+      - name: Install optional libraries
+        if: matrix.use_local == 'on'
+        run: brew install libarchive libgit2 fmt spdlog
+
       - name: Restore & Cache CMake build results
         uses: actions/cache@v3.0.3
         with:
@@ -33,8 +38,9 @@ jobs:
           cmake                                         \
             -B build                                    \
             -G Ninja                                    \
+            -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} \
             -DPOAC_BUILD_TESTING=ON                     \
-            -DCMAKE_BUILD_TYPE=${{ matrix.build_type }}
+            -DCPM_USE_LOCAL_PACKAGES=${{ matrix.use_local }}
 
       - name: Build Poac
         run: ninja