diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 1efe6cba7..c257612d8 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -2,29 +2,36 @@ name: linux-build
 
 on: [push, pull_request]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   linux-build-gui:
 
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-18.04, ubuntu-latest]
+        os: [ubuntu-20.04]
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Prepare
       run: sudo apt-get update && sudo apt-get install mesa-common-dev libgl1-mesa-dev mesa-utils-extra libglapi-mesa ninja-build qt5-qmake qtbase5-dev libqt5opengl5-dev libqt5svg5-dev
 
     - name: Install Qt
-      uses: jurplel/install-qt-action@v2
+      uses: jurplel/install-qt-action@v3
       with:
-        version: 5.14.2
+        version: 5.15.2
         target: desktop
         host: linux
         install-deps: true
 
     - name: Build
-      run: ./build.sh -DQt5_PATH="${Qt5_Dir}" -j3
+      run: |
+        ./build.sh \
+          -DQt5_PATH="${Qt5_Dir}" \
+          -j3
       continue-on-error: true
diff --git a/.github/workflows/mac.yml b/.github/workflows/mac.yml
index 220d1fdc3..f438c08eb 100644
--- a/.github/workflows/mac.yml
+++ b/.github/workflows/mac.yml
@@ -2,29 +2,35 @@ name: mac-build
 
 on: [push, pull_request]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   mac-build-gui:
 
-    runs-on: macOS-latest
+    runs-on: macos-10.15
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Install Qt
-      uses: jurplel/install-qt-action@v2
+      uses: jurplel/install-qt-action@v3
       with:
-        version: 5.14.2
+        version: 5.15.2
         target: desktop
         host: mac
         install-deps: true
 
-    - name: Prepare
-      run: |
-        ln -s /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers/X11/ /usr/local/include/X11
+    #- name: Prepare
+    #  run: |
+    #    ln -s /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers/X11/ /usr/local/include/X11
 
     - name: make
-      run: ./build.sh -DQt5_PATH="${Qt5_Dir}"
+      run: |
+        ./build.sh \
+          -DQt5_PATH="${Qt5_Dir}"
 
     - name: Package
       working-directory: bin/Seg3D
@@ -34,7 +40,7 @@ jobs:
         ./repair_package.sh
 
     - name: Upload installer
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v3
       with:
         name: Seg3DMacInstaller
         path: bin/Seg3D/Seg3D2-2.*-Darwin.pkg
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index aa7dab335..d7ec586b0 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -2,32 +2,49 @@ name: windows-build
 
 on: [push, pull_request]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
 
   windows-build-gui:
     strategy:
       matrix:
-        qtversion: [5.12.8, 5.14.2]
-    runs-on: windows-2016
+        qtversion: [5.15.2]
+        include:
+          - qtversion: 5.15.2
+            qtarch: win64_msvc2019_64
+            cmake-generator: "Visual Studio 17 2022"
+            cmake-arch: x64
+            cmake-toolset: v143
+    runs-on: windows-2022
 
     steps:
 
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Install Qt
-      uses: jurplel/install-qt-action@v2
+      uses: jurplel/install-qt-action@v3
       with:
         version: ${{ matrix.qtversion }}
         target: desktop
         host: windows
-        arch: win64_msvc2017_64
+        arch: ${{ matrix.qtarch }}
         install-deps: true
 
     - name: Configure
       working-directory: bin
       run: |
-        cmake ..\Superbuild -DCMAKE_BUILD_TYPE=Release -G"Visual Studio 15 2017" -Ax64 -DQt5_PATH:PATH="$env:Qt5_Dir" -DBUILD_WITH_PYTHON:BOOL=OFF
+        cmake `
+          ..\Superbuild `
+          -DCMAKE_BUILD_TYPE=Release `
+          -G"${{ matrix.cmake-generator }}" `
+          -A${{ matrix.cmake-arch }} `
+          -T${{ matrix.cmake-toolset }} `
+          -DQt5_PATH:PATH="$env:Qt5_Dir" `
+          -DBUILD_WITH_PYTHON:BOOL=OFF
 
     - name: Compile
       working-directory: bin
@@ -40,7 +57,7 @@ jobs:
       run: cmake --build . --config Release --target package
 
     - name: Upload installer
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v3
       with:
         name: Seg3DWindowsInstaller_${{ matrix.qtversion }}
         path: bin/Seg3D/Seg3D2-2.*-win64.exe
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index dd9511ec8..000000000
--- a/.travis.yml
+++ /dev/null
@@ -1,18 +0,0 @@
-os: linux
-dist: bionic
-
-compiler:
-  - gcc
-  - clang
-before_install:
-  - sudo apt-get -qq --yes update
-  # packages for headless build
-  - sudo apt-get -qq --yes install ninja-build mesa-common-dev libgl1-mesa-dev libglu1-mesa-dev mesa-utils-extra libglapi-mesa libglapi-mesa qt5-qmake qtbase5-dev libqt5opengl5-dev libqt5svg5-dev
-script:
-  - cd bin
-  - cmake -GNinja -DTRAVIS_BUILD:BOOL=ON -DQt5_PATH=$(dpkg -L qtbase5-dev) ../Superbuild
-  - travis_wait 70 ninja
-
-after_success:
-  - cd Seg3D
-  - ninja test
diff --git a/README.md b/README.md
index a29672357..50b34b10a 100644
--- a/README.md
+++ b/README.md
@@ -2,4 +2,3 @@
 
 Seg3D [build instructions and documentation](http://sciinstitute.github.io/seg3d.pages).
 
-[![Build Status](https://travis-ci.org/SCIInstitute/Seg3D.svg?branch=master)](https://travis-ci.org/SCIInstitute/Seg3D)
diff --git a/Superbuild/BoostExternal.cmake b/Superbuild/BoostExternal.cmake
index 05284ee82..a72ede5a8 100644
--- a/Superbuild/BoostExternal.cmake
+++ b/Superbuild/BoostExternal.cmake
@@ -71,10 +71,6 @@ endif()
 
 set(boost_GIT_URL "https://github.com/CIBC-Internal/boost.git")
 
-if(TRAVIS_BUILD)
-  list(APPEND boost_CXX_Flag "-w")
-endif()
-
 # TODO: fix install step
 #
 # If CMake ever allows overriding the checkout command or adding flags,
diff --git a/Superbuild/FreetypeExternal.cmake b/Superbuild/FreetypeExternal.cmake
index 9e22e49df..671677658 100644
--- a/Superbuild/FreetypeExternal.cmake
+++ b/Superbuild/FreetypeExternal.cmake
@@ -27,11 +27,6 @@
 set_property(DIRECTORY PROPERTY "EP_BASE" ${ep_base})
 set(freetype_GIT_TAG "origin/master")
 
-if(TRAVIS_BUILD)
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -w")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -w")
-endif()
-
 # If CMake ever allows overriding the checkout command or adding flags,
 # git checkout -q will silence message about detached head (harmless).
 ExternalProject_Add(Freetype_external
diff --git a/Superbuild/GlewExternal.cmake b/Superbuild/GlewExternal.cmake
index 2aeb21d5b..46d7e4eb8 100644
--- a/Superbuild/GlewExternal.cmake
+++ b/Superbuild/GlewExternal.cmake
@@ -27,11 +27,6 @@
 set_property(DIRECTORY PROPERTY "EP_BASE" ${ep_base})
 set(glew_GIT_TAG "origin/master")
 
-if(TRAVIS_BUILD)
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -w")
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -w")
-endif()
-
 # If CMake ever allows overriding the checkout command or adding flags,
 # git checkout -q will silence message about detached head (harmless).
 ExternalProject_Add(Glew_external
diff --git a/Superbuild/ITKExternal.cmake b/Superbuild/ITKExternal.cmake
index 849217893..30d72cc00 100644
--- a/Superbuild/ITKExternal.cmake
+++ b/Superbuild/ITKExternal.cmake
@@ -35,16 +35,6 @@ set(itk_ARGS
   "-DITK_INSTALL_NO_DEVELOPMENT:BOOL=OFF"
 )
 
-if(TRAVIS_BUILD)
-  list(APPEND itk_ARGS
-    "-Wno-dev"
-    "-Wno-deprecated"
-  )
-
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -w")
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -w")
-endif()
-
 set(itk_CACHE_ARGS
   "-DCMAKE_VERBOSE_MAKEFILE:BOOL=${CMAKE_VERBOSE_MAKEFILE}"
   "-DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}"
diff --git a/Superbuild/ImplicitFunctionExternal.cmake b/Superbuild/ImplicitFunctionExternal.cmake
index 1d070c919..229c11dc0 100644
--- a/Superbuild/ImplicitFunctionExternal.cmake
+++ b/Superbuild/ImplicitFunctionExternal.cmake
@@ -28,10 +28,6 @@ set_property(DIRECTORY PROPERTY "EP_BASE" ${ep_base})
 set(implicitFunction_GIT_TAG "origin/master")
 set(implicitFunction_DEPENDENCIES "Tetgen_external;Eigen_external")
 
-if(TRAVIS_BUILD)
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -w")
-endif()
-
 # If CMake ever allows overriding the checkout command or adding flags,
 # git checkout -q will silence message about detached head (harmless).
 ExternalProject_Add(ImplicitFunction_external
diff --git a/Superbuild/LibPNGExternal.cmake b/Superbuild/LibPNGExternal.cmake
index c604dda0b..491316f18 100644
--- a/Superbuild/LibPNGExternal.cmake
+++ b/Superbuild/LibPNGExternal.cmake
@@ -28,11 +28,6 @@ set_property(DIRECTORY PROPERTY "EP_BASE" ${ep_base})
 set(libpng_GIT_TAG "origin/master")
 set(libpng_DEPENDENCIES "Zlib_external")
 
-if(TRAVIS_BUILD)
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -w")
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -w")
-endif()
-
 # If CMake ever allows overriding the checkout command or adding flags,
 # git checkout -q will silence message about detached head (harmless).
 ExternalProject_Add(LibPNG_external
diff --git a/Superbuild/SQLiteExternal.cmake b/Superbuild/SQLiteExternal.cmake
index bc4462634..45f8f2b65 100644
--- a/Superbuild/SQLiteExternal.cmake
+++ b/Superbuild/SQLiteExternal.cmake
@@ -27,11 +27,6 @@
 set_property(DIRECTORY PROPERTY "EP_BASE" ${ep_base})
 set(sqlite_GIT_TAG "origin/master")
 
-if(TRAVIS_BUILD)
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -w")
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -w")
-endif()
-
 # If CMake ever allows overriding the checkout command or adding flags,
 # git checkout -q will silence message about detached head (harmless).
 ExternalProject_Add(SQLite_external
diff --git a/Superbuild/Superbuild.cmake b/Superbuild/Superbuild.cmake
index cb0a5e5b7..33690a03a 100644
--- a/Superbuild/Superbuild.cmake
+++ b/Superbuild/Superbuild.cmake
@@ -123,13 +123,6 @@ endif()
 
 option(BUILD_MANUAL_TOOLS_ONLY "Build Seg3D library with only manual tools." OFF)
 
-###########################################ß
-# Travis CI build needs to be as slim as possible
-###########################################
-
-option(TRAVIS_BUILD "Slim build for Travis CI" OFF)
-mark_as_advanced(TRAVIS_BUILD)
-
 set(ENABLED_WARNINGS "-Wall")
 
 ###########################################
@@ -142,13 +135,12 @@ else()
   option(DO_ZLIB_MANGLE "Mangle Zlib names to avoid conflicts with Qt5 or other external libraries" ON)
 endif()
 
-if (TRAVIS_BUILD)
-  set(QT_MIN_VERSION "5.9")
-else()
-  set(QT_MIN_VERSION "5.12")
-endif()
-
 if(SEG3D_BUILD_INTERFACE)
+
+  if(NOT DEFINED QT_MIN_VERSION)
+    set(QT_MIN_VERSION "5.12")
+  endif()
+
   set(Qt5_PATH "" CACHE PATH "Path to directory where Qt 5 is installed. Directory should contain lib and bin subdirectories.")
   #set(CMAKE_AUTOMOC ON)
 
diff --git a/Superbuild/TeemExternal.cmake b/Superbuild/TeemExternal.cmake
index 7b762e934..cc21c93b3 100644
--- a/Superbuild/TeemExternal.cmake
+++ b/Superbuild/TeemExternal.cmake
@@ -28,11 +28,6 @@ set_property(DIRECTORY PROPERTY "EP_BASE" ${ep_base})
 set(teem_GIT_TAG "origin/master")
 set(teem_DEPENDENCIES "Zlib_external;LibPNG_external")
 
-if(TRAVIS_BUILD)
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -w")
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -w")
-endif()
-
 # If CMake ever allows overriding the checkout command or adding flags,
 # git checkout -q will silence message about detached head (harmless).
 ExternalProject_Add(Teem_external
diff --git a/Superbuild/TetgenExternal.cmake b/Superbuild/TetgenExternal.cmake
index 98cf8eb5a..ad449333f 100644
--- a/Superbuild/TetgenExternal.cmake
+++ b/Superbuild/TetgenExternal.cmake
@@ -28,26 +28,6 @@ set_property(DIRECTORY PROPERTY "EP_BASE" ${ep_base})
 
 set(TETGEN_LIBRARY "tet")
 
-# if(TRAVIS_BUILD OR ${CMAKE_VERSION} VERSION_GREATER 3.7.2)
-  # # allowed since CMake 3.7.2
-  # # only supporting in CI builds for now, since CMake version is so new
-  # set(DOWNLOAD_URL "http://tetgen.org/files/tetgen1.4.3.tar.gz http://www.sci.utah.edu/devbuilds/seg3d/tetgen1.4.3.tar.gz")
-# else()
-  # set(DOWNLOAD_URL "http://tetgen.org/files/tetgen1.4.3.tar.gz")
-# endif()
-
-# ExternalProject_Add(Tetgen_external
-  # URL ${DOWNLOAD_URL}
-  # PATCH_COMMAND ""
-  # INSTALL_COMMAND ""
-  # CMAKE_CACHE_ARGS
-    # -DCMAKE_VERBOSE_MAKEFILE:BOOL=${CMAKE_VERBOSE_MAKEFILE}
-    # -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
-    # -DCMAKE_POSITION_INDEPENDENT_CODE:BOOL=ON
-    # -DTETGEN_LIBRARY:STRING=${TETGEN_LIBRARY}
-# )
-
-
 set(tetgen_SVN_URL "https://gforge.sci.utah.edu/svn/tetgen")
 #set(sci_data_DIR "${CMAKE_BINARY_DIR}/SCIRunData")
 
diff --git a/Superbuild/ZlibExternal.cmake b/Superbuild/ZlibExternal.cmake
index fbcaeb5a3..6a834b4e4 100644
--- a/Superbuild/ZlibExternal.cmake
+++ b/Superbuild/ZlibExternal.cmake
@@ -27,11 +27,6 @@
 set_property(DIRECTORY PROPERTY "EP_BASE" ${ep_base})
 set(zlib_GIT_TAG "origin/master")
 
-if(TRAVIS_BUILD)
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -w")
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -w")
-endif()
-
 # If CMake ever allows overriding the checkout command or adding flags,
 # git checkout -q will silence message about detached head (harmless).
 ExternalProject_Add(Zlib_external