diff --git a/.github/workflows/auto-format.yml b/.github/workflows/auto-format.yml
index 772413a..e33cece 100644
--- a/.github/workflows/auto-format.yml
+++ b/.github/workflows/auto-format.yml
@@ -20,5 +20,5 @@ jobs:
         with:
           author_name: github-actions
           author_email: 41898282+github-actions[bot]@users.noreply.github.com
-          message: 'Force code style compliance'
+          message: 'Code style fixes'
           add: '.'
diff --git a/.github/workflows/selftest.yml b/.github/workflows/selftest.yml
index 3d4ee4e..9aabcd9 100644
--- a/.github/workflows/selftest.yml
+++ b/.github/workflows/selftest.yml
@@ -3,15 +3,10 @@ name: Selftest
 on: [push]
 
 env:
-  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
-  BUILD_TYPE: Release
+  BUILD_TYPE: Debug
 
 jobs:
   build:
-    # The CMake configure and build commands are platform agnostic and should work equally
-    # well on Windows or Mac.  You can convert this to a matrix build if you need
-    # cross-platform coverage.
-    # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
     runs-on: ubuntu-latest
 
     steps:
@@ -24,29 +19,19 @@ jobs:
       run: git submodule update --init
 
     - name: Create Build Environment
-      # Some projects don't allow in-source building, so create a separate build directory
-      # We'll use this as our working directory for all subsequent commands
       run: cmake -E make_directory ${{github.workspace}}/build
 
     - name: Configure CMake
-      # Use a bash shell so we can use the same syntax for environment variable
-      # access regardless of the host operating system
       shell: bash
       working-directory: ${{github.workspace}}/build
-      # Note the current convention is to use the -S and -B options here to specify source
-      # and build directories, but this is only available with CMake 3.13 and higher.
-      # The CMake binaries on the Github Actions machines are (as of this writing) 3.12
       run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE
 
     - name: Build
       working-directory: ${{github.workspace}}/build
       shell: bash
-      # Execute the build.  You can specify a specific target with "--target <NAME>"
-      run: cmake --build . --config $BUILD_TYPE
+      run: cmake --build . --config $BUILD_TYPE --parallel 8
 
     - name: Test
       working-directory: ${{github.workspace}}/build
       shell: bash
-      # Execute tests defined by the CMake configuration.
-      # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
       run: ctest -C $BUILD_TYPE
diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
index f17f862..859841f 100644
--- a/.github/workflows/wheels.yml
+++ b/.github/workflows/wheels.yml
@@ -38,7 +38,7 @@ jobs:
             cd pkg/pypi;
             python setup.py build_clib
         run: |
-          swig -c++ -python -o src/bindings/python/zt_wrap.cpp -Iinclude src/bindings/python/zt.i
+          swig -c++ -python -o src/bindings/python/zt_wrap.cxx -Iinclude src/bindings/python/zt.i
           python -m cibuildwheel pkg/pypi --output-dir wheelhouse
 
       - uses: actions/upload-artifact@v2