diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3b5ae35c89..59df9567d5 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -23,6 +23,7 @@ jobs:
     steps:
     - name: Checkout
       uses: actions/checkout@v3
+    - uses: seanmiddleditch/gha-setup-ninja@master
       with:
         submodules: recursive
 
@@ -52,13 +53,13 @@ jobs:
     - name: Build on Linux
       if: startsWith(matrix.os, 'ubuntu')
       run: |
-        schroot --chroot steamrt_scout_i386 -- cmake -B build -S . -DCMAKE_EXE_LINKER_FLAGS="-Wl,--no-undefined" -DCMAKE_INSTALL_PREFIX="$PWD/dist"
+        schroot --chroot steamrt_scout_i386 -- cmake -G "Ninja" -B build -S . -DCMAKE_EXE_LINKER_FLAGS="-Wl,--no-undefined" -DCMAKE_INSTALL_PREFIX="$PWD/dist"
         schroot --chroot steamrt_scout_i386 -- cmake --build build --target all
         schroot --chroot steamrt_scout_i386 -- cmake --build build --target install
     - name: Build on Linux with vgui
       if: startsWith(matrix.os, 'ubuntu') && startsWith(matrix.cc, 'gcc')
       run: |
-        schroot --chroot steamrt_scout_i386 -- cmake -B build-vgui -S . -DCMAKE_EXE_LINKER_FLAGS="-Wl,--no-undefined" -DUSE_VGUI=ON -DCMAKE_INSTALL_PREFIX="$PWD/dist-vgui"
+        schroot --chroot steamrt_scout_i386 -- cmake -G "Ninja" -B build-vgui -S . -DCMAKE_EXE_LINKER_FLAGS="-Wl,--no-undefined" -DUSE_VGUI=ON -DCMAKE_INSTALL_PREFIX="$PWD/dist-vgui"
         cp vgui_support/vgui-dev/lib/vgui.so build-vgui/cl_dll
         schroot --chroot steamrt_scout_i386 -- cmake --build build-vgui --target all
         schroot --chroot steamrt_scout_i386 -- cmake --build build-vgui --target install
@@ -69,12 +70,12 @@ jobs:
     - name: Build on Windows
       if: startsWith(matrix.os, 'windows')
       run: |
-        cmake -G "Visual Studio 16 2019" -A Win32 -B build -DCMAKE_INSTALL_PREFIX="dist"
+        cmake -G "Ninja" -B build -DCMAKE_INSTALL_PREFIX="dist"
         msbuild -verbosity:normal /property:Configuration=Release build/INSTALL.vcxproj
     - name: Build on Windows with vgui
       if: startsWith(matrix.os, 'windows')
       run: |
-        cmake -G "Visual Studio 16 2019" -A Win32 -B build -DUSE_VGUI=ON -DCMAKE_INSTALL_PREFIX="dist-vgui"
+        cmake -G "Ninja" -B build -DUSE_VGUI=ON -DCMAKE_INSTALL_PREFIX="dist-vgui"
         msbuild -verbosity:normal /property:Configuration=Release build/INSTALL.vcxproj
 
     - name: Extract branch name
diff --git a/.github/workflows/manual.yml b/.github/workflows/manual.yml
index 9f03d11058..a55ea8d249 100644
--- a/.github/workflows/manual.yml
+++ b/.github/workflows/manual.yml
@@ -33,6 +33,7 @@ jobs:
     steps:
     - name: Checkout
       uses: actions/checkout@v3
+    - uses: seanmiddleditch/gha-setup-ninja@master
       with:
         submodules: recursive
 
@@ -67,7 +68,7 @@ jobs:
     - name: Build on Linux
       if: startsWith(matrix.os, 'ubuntu')
       run: |
-        schroot --chroot steamrt_scout_i386 -- cmake -B build -S . -DCMAKE_EXE_LINKER_FLAGS="-Wl,--no-undefined" -DCMAKE_BUILD_TYPE=${{ github.event.inputs.buildtype }} -DCMAKE_INSTALL_PREFIX="$PWD/dist" -DUSE_VGUI=${{ github.event.inputs.usevgui }}
+        schroot --chroot steamrt_scout_i386 -- cmake -G "Ninja" -B build -S . -DCMAKE_EXE_LINKER_FLAGS="-Wl,--no-undefined" -DCMAKE_BUILD_TYPE=${{ github.event.inputs.buildtype }} -DCMAKE_INSTALL_PREFIX="$PWD/dist" -DUSE_VGUI=${{ github.event.inputs.usevgui }}
         schroot --chroot steamrt_scout_i386 -- cmake --build build --target all
         schroot --chroot steamrt_scout_i386 -- cmake --build build --target install
 
@@ -77,7 +78,7 @@ jobs:
     - name: Build on Windows
       if: startsWith(matrix.os, 'windows')
       run: |
-        cmake -G "Visual Studio 16 2019" -A Win32 -B build -DCMAKE_INSTALL_PREFIX="dist" -DUSE_VGUI=${{ github.event.inputs.usevgui }}
+        cmake -G "Ninja" -B build -DCMAKE_INSTALL_PREFIX="dist" -DUSE_VGUI=${{ github.event.inputs.usevgui }}
         msbuild -verbosity:normal /property:Configuration=${{ github.event.inputs.buildtype }} build/INSTALL.vcxproj
 
     - name: Extract branch name