diff --git a/.github/workflows/build-linux.yml b/.github/workflows/build-linux.yml
index fa2425e4d..c582bac44 100644
--- a/.github/workflows/build-linux.yml
+++ b/.github/workflows/build-linux.yml
@@ -20,19 +20,15 @@ jobs:
         # Github Actions requires a single row to be added to the build matrix.
         # See https://help.github.com/en/articles/workflow-syntax-for-github-actions.
         name: [
-          ubuntu-20.04-gcc-7,
           ubuntu-20.04-gcc-9,
           ubuntu-20.04-clang-9,
+          ubuntu-22.04-gcc-11,
+          ubuntu-22.04-clang-14,
         ]
 
         build_type: [Debug, Release]
         build_unstable: [ON]
         include:
-          - name: ubuntu-20.04-gcc-7
-            os: ubuntu-20.04
-            compiler: gcc
-            version: "7"
-
           - name: ubuntu-20.04-gcc-9
             os: ubuntu-20.04
             compiler: gcc
@@ -43,6 +39,16 @@ jobs:
             compiler: clang
             version: "9"
 
+          - name: ubuntu-22.04-gcc-11
+            os: ubuntu-22.04
+            compiler: gcc
+            version: "11"
+
+          - name: ubuntu-22.04-clang-14
+            os: ubuntu-22.04
+            compiler: clang
+            version: "14"
+
     steps:
       - name: Checkout
         uses: actions/checkout@v2
diff --git a/.github/workflows/build-macos.yml b/.github/workflows/build-macos.yml
index 7b7646328..6622809a9 100644
--- a/.github/workflows/build-macos.yml
+++ b/.github/workflows/build-macos.yml
@@ -38,14 +38,8 @@ jobs:
         run: |
           brew install cmake ninja
           brew install boost
-          if [ "${{ matrix.compiler }}" = "gcc" ]; then
-            brew install gcc@${{ matrix.version }}
-            echo "CC=gcc-${{ matrix.version }}" >> $GITHUB_ENV
-            echo "CXX=g++-${{ matrix.version }}" >> $GITHUB_ENV
-          else
-            sudo xcode-select -switch /Applications/Xcode.app
-            echo "CC=clang" >> $GITHUB_ENV
-            echo "CXX=clang++" >> $GITHUB_ENV
-          fi
+          sudo xcode-select -switch /Applications/Xcode.app
+          echo "CC=clang" >> $GITHUB_ENV
+          echo "CXX=clang++" >> $GITHUB_ENV
       - name: Build and Test
         run: bash .github/scripts/unix.sh -t
diff --git a/.github/workflows/build-python.yml b/.github/workflows/build-python.yml
index 4eb861ecc..5793f1955 100644
--- a/.github/workflows/build-python.yml
+++ b/.github/workflows/build-python.yml
@@ -19,32 +19,26 @@ jobs:
         # Github Actions requires a single row to be added to the build matrix.
         # See https://help.github.com/en/articles/workflow-syntax-for-github-actions.
         name: [
-          ubuntu-20.04-gcc-7,
           ubuntu-20.04-gcc-9,
+          ubuntu-20.04-gcc-9-tbb,
           ubuntu-20.04-clang-9,
           macOS-11-xcode-13.4.1,
-          ubuntu-20.04-gcc-7-tbb,
         ]
 
         build_type: [Debug, Release]
         python_version: [3]
         include:
-          - name: ubuntu-20.04-gcc-7
-            os: ubuntu-20.04
-            compiler: gcc
-            version: "7"
-
           - name: ubuntu-20.04-gcc-9
             os: ubuntu-20.04
             compiler: gcc
             version: "9"
 
-          - name: ubuntu-20.04-clang-9
+          - name: ubuntu-20.04-gcc-9-tbb
             os: ubuntu-20.04
-            compiler: clang
+            compiler: gcc
             version: "9"
+            flag: tbb
 
-          # NOTE temporarily added this as it is a required check.
           - name: ubuntu-20.04-clang-9
             os: ubuntu-20.04
             compiler: clang
@@ -57,12 +51,6 @@ jobs:
             compiler: xcode
             version: "13.4.1"
 
-          - name: ubuntu-20.04-gcc-7-tbb
-            os: ubuntu-20.04
-            compiler: gcc
-            version: "7"
-            flag: tbb
-
     steps:
       - name: Checkout
         uses: actions/checkout@v2
diff --git a/.github/workflows/build-special.yml b/.github/workflows/build-special.yml
index 458394211..1c5ad36ed 100644
--- a/.github/workflows/build-special.yml
+++ b/.github/workflows/build-special.yml
@@ -22,44 +22,45 @@ jobs:
         # See https://help.github.com/en/articles/workflow-syntax-for-github-actions.
         name:
           [
-            ubuntu-gcc-deprecated,
-            ubuntu-gcc-quaternions,
-            ubuntu-gcc-tbb,
-            ubuntu-cayleymap,
+            ubuntu-clang-deprecated,
+            ubuntu-clang-quaternions,
+            ubuntu-clang-tbb,
+            ubuntu-clang-cayleymap,
+            ubuntu-clang-system-libs,
           ]
 
         build_type: [Debug, Release]
 
         include:
-          - name: ubuntu-gcc-deprecated
+          - name: ubuntu-clang-deprecated
             os: ubuntu-20.04
-            compiler: gcc
-            version: "9"
+            compiler: clang
+            version: "14"
             flag: deprecated
 
-          - name: ubuntu-gcc-quaternions
-            os: ubuntu-20.04
-            compiler: gcc
-            version: "9"
+            - name: ubuntu-clang-quaternions
+            os: ubuntu-22.04
+            compiler: clang
+            version: "14"
             flag: quaternions
 
-          - name: ubuntu-gcc-tbb
-            os: ubuntu-20.04
-            compiler: gcc
-            version: "9"
+          - name: ubuntu-clang-tbb
+            os: ubuntu-22.04
+            compiler: clang
+            version: "14"
             flag: tbb
 
-          - name: ubuntu-cayleymap
-            os: ubuntu-20.04
-            compiler: gcc
-            version: "9"
+          - name: ubuntu-clang-cayleymap
+            os: ubuntu-22.04
+            compiler: clang
+            version: "14"
             flag: cayley
 
-          - name: ubuntu-system-libs
-            os: ubuntu-20.04
-            compiler: gcc
-            version: "9"
-            flag: system-libs
+          - name: ubuntu-clang-system-libs
+            os: ubuntu-22.04
+            compiler: clang
+            version: "14"
+            flag: system
 
     steps:
       - name: Checkout
@@ -68,25 +69,12 @@ jobs:
       - name: Install (Linux)
         if: runner.os == 'Linux'
         run: |
-          # LLVM 9 is not in Bionic's repositories so we add the official LLVM repository.
-          if [ "${{ matrix.compiler }}" = "clang" ] && [ "${{ matrix.version }}" = "9" ]; then
-            gpg --keyserver keyserver.ubuntu.com --recv-key $LLVM_KEY || gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-key $LLVM_KEY
-            gpg -a --export 15CF4D18AF4F7421 | sudo apt-key add -
-            sudo add-apt-repository "deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-9 main"
-          fi
-
           sudo apt-get -y update
           sudo apt-get -y install cmake build-essential pkg-config libpython3-dev python3-numpy libicu-dev
 
-          if [ "${{ matrix.compiler }}" = "gcc" ]; then
-            sudo apt-get install -y g++-${{ matrix.version }} g++-${{ matrix.version }}-multilib
-            echo "CC=gcc-${{ matrix.version }}" >> $GITHUB_ENV
-            echo "CXX=g++-${{ matrix.version }}" >> $GITHUB_ENV
-          else
-            sudo apt-get install -y clang-${{ matrix.version }} g++-multilib
-            echo "CC=clang-${{ matrix.version }}" >> $GITHUB_ENV
-            echo "CXX=clang++-${{ matrix.version }}" >> $GITHUB_ENV
-          fi
+          sudo apt-get install -y clang-${{ matrix.version }} g++-multilib
+          echo "CC=clang-${{ matrix.version }}" >> $GITHUB_ENV
+          echo "CXX=clang++-${{ matrix.version }}" >> $GITHUB_ENV
 
       - name: Install Boost
         if: runner.os == 'Linux'
@@ -97,15 +85,9 @@ jobs:
         if: runner.os == 'macOS'
         run: |
           brew install cmake ninja boost
-          if [ "${{ matrix.compiler }}" = "gcc" ]; then
-            brew install gcc@${{ matrix.version }}
-            echo "CC=gcc-${{ matrix.version }}" >> $GITHUB_ENV
-            echo "CXX=g++-${{ matrix.version }}" >> $GITHUB_ENV
-          else
-            sudo xcode-select -switch /Applications/Xcode_${{ matrix.version }}.app
-            echo "CC=clang" >> $GITHUB_ENV
-            echo "CXX=clang++" >> $GITHUB_ENV
-            fi
+          sudo xcode-select -switch /Applications/Xcode_${{ matrix.version }}.app
+          echo "CC=clang" >> $GITHUB_ENV
+          echo "CXX=clang++" >> $GITHUB_ENV
 
       - name: Set Allow Deprecated Flag
         if: matrix.flag == 'deprecated'