diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4c0255b0..75eb505a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -206,19 +206,9 @@ jobs:
       shell: bash
       run: git config --global --add safe.directory ${GITHUB_WORKSPACE} && cmake -E make_directory build
 
-    - name: Install zlib
-      shell: bash
-      run: |
-        git clone --depth=1 https://github.com/madler/zlib.git zlib && cd zlib
-        cmake -B build -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DZLIB_BUILD_TESTING=OFF -DZLIB_BUILD_MINIZIP=OFF
-        cd build && make && sudo make install
-
     - name: Install libpng
       shell: bash
-      run: |
-        git clone --depth=1 https://git.code.sf.net/p/libpng/code lpng && cd lpng
-        cmake -B build -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DPNG_TESTS=OFF -DPNG_TOOLS=OFF
-        cd build && make && sudo make install
+      run: brew install libpng
 
     - name: Install GS1 Syntax Engine
       run: git clone --depth=1 https://github.com/gs1/gs1-syntax-engine && cd gs1-syntax-engine/src/c-lib && make CFLAGS_G='-DEXCLUDE_SYNTAX_DICTIONARY_LOADER' lib && (sudo make install || true)
@@ -236,7 +226,7 @@ jobs:
     - name: Test
       working-directory: build
       shell: bash
-      run: LD_LIBRARY_PATH=$LD_LIBRARY_PATH:"$(pwd)/backend:/usr/local/lib" PATH=$PATH:"$(pwd)/frontend" ctest -V -C $BUILD_TYPE
+      run: LD_LIBRARY_PATH=$LD_LIBRARY_PATH:"$(pwd)/backend" PATH=$PATH:"$(pwd)/frontend" ctest -V -C $BUILD_TYPE
 
   build-macOS-sanitize:
     runs-on: macOS-latest
@@ -275,11 +265,12 @@ jobs:
       with:
         usesh: true
         mem: 4096
-        prepare: pkg install -y git cmake gmake gcc graphics/png
+        prepare: pkg install -y git cmake gmake gcc graphics/png qt5-core qt5-uitools qt5-buildtools qt5-qmake qt5-svg qt5-testlib
         run: |
           set -e
           git config --global --add safe.directory ${GITHUB_WORKSPACE}
           cmake -E make_directory build
-          cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DZINT_TEST=ON -DZINT_SANITIZE=OFF -DZINT_USE_QT=OFF
-          cmake -B build -DCMAKE_BUILD_TYPE=$BUILD_TYPE
+          cmake -B build -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DZINT_TEST=ON
           cmake --build build --config $BUILD_TYPE
+          cd build
+          ctest -V -C $BUILD_TYPE