diff --git a/.github/workflows/build-tests.yml b/.github/workflows/build-tests.yml
index e75fbb5..1594cf1 100644
--- a/.github/workflows/build-tests.yml
+++ b/.github/workflows/build-tests.yml
@@ -6,16 +6,12 @@
 #     - windows-latest - cl
 #     - macos-latest   - clang
 #
-# TODO:
-#     - install optional dependencies for windows-latest and macos-latest
       
 
 name: Multi-Platform Build Tests
 
 on:
   push:
-  pull_request:
-    branches: [ master ]
 
 jobs:
   build:
@@ -66,24 +62,50 @@ jobs:
         # install zint-2.15.0 from source
         wget https://downloads.sourceforge.net/project/zint/zint/2.15.0/zint-2.15.0-src.tar.gz && tar xzf zint-2.15.0-src.tar.gz && ( cd zint-2.15.0-src && mkdir build && cd build && cmake .. && make && sudo make install )
 
+    - name: Pre-install vcpkg (Windows)
+      if: startsWith( matrix.os, 'windows-' )
+      shell: bash
+      run: |
+        git clone --depth 1 https://github.com/microsoft/vcpkg.git
+
+    - name: Restore vcpkg cache (Windows)
+      if: startsWith(matrix.os, 'windows-')
+      uses: actions/cache@v4
+      with:
+        path: |
+          ${{ github.workspace }}/vcpkg/installed
+          ${{ github.workspace }}/vcpkg/downloads
+        key: vcpkg-${{ runner.os }}-${{ hashFiles('.github/workflows/build-tests.yml') }}
+        restore-keys: |
+          vcpkg-${{ runner.os }}-
+
     - name: Install optional dependencies (Windows)
       if: startsWith( matrix.os, 'windows-' )
       shell: bash
       run: |
         # install packages
+        ./vcpkg/bootstrap-vcpkg.sh
+        ./vcpkg/vcpkg install pkgconf
+        ./vcpkg/vcpkg install zlib
+        ./vcpkg/vcpkg install libqrencode
+        ./vcpkg/vcpkg install zint
+        echo "TOOLCHAIN_FILE=${{ github.workspace }}/vcpkg/scripts/buildsystems/vcpkg.cmake" >> $GITHUB_ENV
 
     - name: Install optional dependencies (MacOS)
       if: startsWith( matrix.os, 'macos-' )
       shell: bash
       run: |
         # install packages
+        brew install zlib
+        brew install qrencode
+        brew install zint
 
     - name: Install Qt
       uses: jurplel/install-qt-action@v4
       with:
         version: '6.2.*'
         install-deps: 'true'
-        archives: 'qtbase qtsvg qttools icu'
+        archives: 'qtbase qtsvg qttools icu qttranslations'
 
     - name: Set reusable strings
       id: strings
@@ -97,6 +119,7 @@ jobs:
         -DCMAKE_CXX_COMPILER=${{ matrix.cpp_compiler }}
         -DCMAKE_C_COMPILER=${{ matrix.c_compiler }}
         -DCMAKE_BUILD_TYPE=${{ matrix.build_type }}
+        -DCMAKE_TOOLCHAIN_FILE=${{ env.TOOLCHAIN_FILE }}
         -S ${{ github.workspace }}
 
     - name: Build
diff --git a/cmake/Modules/FindLibZint.cmake b/cmake/Modules/FindLibZint.cmake
index 9cf532f..791e6c1 100644
--- a/cmake/Modules/FindLibZint.cmake
+++ b/cmake/Modules/FindLibZint.cmake
@@ -34,23 +34,36 @@ if (LIBZINT_LIBRARY AND LIBZINT_INCLUDE_DIR)
 endif ()
 
 if (LIBZINT_INCLUDE_DIR AND EXISTS "${LIBZINT_INCLUDE_DIR}/zint.h")
+  # Before zint 2.10, version information was defined in macros in zint.h
   file (STRINGS "${LIBZINT_INCLUDE_DIR}/zint.h" ZINT_MAJOR_H REGEX "^#define ZINT_VERSION_MAJOR *[0-9]*")
   file (STRINGS "${LIBZINT_INCLUDE_DIR}/zint.h" ZINT_MINOR_H REGEX "^#define ZINT_VERSION_MINOR *[0-9]*")
   file (STRINGS "${LIBZINT_INCLUDE_DIR}/zint.h" ZINT_MICRO_H REGEX "^#define ZINT_VERSION_RELEASE *[0-9]*")
   if (ZINT_MAJOR_H) # ZINT_MINOR_H and ZINT_MICRO_H may be zero so don't test
-    string (REGEX REPLACE "^.*VERSION_MAJOR *([0-9]*)" "\\1" ZINT_MAJOR ${ZINT_MAJOR_H})
+    string (REGEX REPLACE "^.*VERSION_MAJOR *([0-9]*)" "\\1" ZINT_MAJOR "${ZINT_MAJOR_H}")
     string (REGEX REPLACE "^.*VERSION_MINOR *([0-9]*)" "\\1" ZINT_MINOR "${ZINT_MINOR_H}")
     string (REGEX REPLACE "^.*VERSION_RELEASE *([0-9]*)" "\\1" ZINT_MICRO "${ZINT_MICRO_H}")
     set (LIBZINT_VERSION_STRING ${ZINT_MAJOR}.${ZINT_MINOR}.${ZINT_MICRO})
     math (EXPR LIBZINT_VERSION "${ZINT_MAJOR} * 10000 + ${ZINT_MINOR} * 100 + ${ZINT_MICRO}")
   else ()
-    execute_process(COMMAND "zint" "-h" OUTPUT_VARIABLE EXEC_ZINT_VERSION ERROR_QUIET)
+    # For zint 2.10+, version macros are no longer available in public header files -- query zint command
+    find_program (ZINT_COMMAND NAMES zint zint.exe)
+    execute_process(COMMAND ${ZINT_COMMAND} "-v" OUTPUT_VARIABLE EXEC_ZINT_VERSION ERROR_QUIET)
     if (EXEC_ZINT_VERSION)
       string (REGEX REPLACE "^Zint version ([0-9.]+).*$" "\\1" LIBZINT_VERSION_STRING ${EXEC_ZINT_VERSION})
       string (REGEX REPLACE "^([0-9]+).*$" "\\1" ZINT_MAJOR ${LIBZINT_VERSION_STRING})
       string (REGEX REPLACE "^[0-9]+\.([0-9]+).*$" "\\1" ZINT_MINOR ${LIBZINT_VERSION_STRING})
       string (REGEX REPLACE "^[0-9]+\.[0-9]+\.([0-9]+).*$" "\\1" ZINT_MICRO ${LIBZINT_VERSION_STRING})
       math (EXPR LIBZINT_VERSION "${ZINT_MAJOR} * 10000 + ${ZINT_MINOR} * 100 + ${ZINT_MICRO}")
+    else ()
+      # As a last resort, look for the Version comment in zint.h (has not always been present)
+      file (STRINGS "${LIBZINT_INCLUDE_DIR}/zint.h" ZINT_VERSION_STRING_H REGEX "^.*Version: *[0-9\.]*")
+      if (ZINT_VERSION_STRING_H)
+        string (REGEX REPLACE "^.*([0-9]+\.[0-9]+\.[0-9]).*$" "\\1" LIBZINT_VERSION_STRING "${ZINT_VERSION_STRING_H}")
+        string (REGEX REPLACE "^([0-9]+).*$" "\\1" ZINT_MAJOR ${LIBZINT_VERSION_STRING})
+        string (REGEX REPLACE "^[0-9]+\.([0-9]+).*$" "\\1" ZINT_MINOR ${LIBZINT_VERSION_STRING})
+        string (REGEX REPLACE "^[0-9]+\.[0-9]+\.([0-9]+).*$" "\\1" ZINT_MICRO ${LIBZINT_VERSION_STRING})
+        math (EXPR LIBZINT_VERSION "${ZINT_MAJOR} * 10000 + ${ZINT_MINOR} * 100 + ${ZINT_MICRO}")
+      endif ()
     endif ()
   endif ()
 endif ()