diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 2a2d0f93..0cdc31b2 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -36,7 +36,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
-    - run: make check-code-style
+    - run: KALEIDOSCOPE_CODE_FORMATTER=clang-format-12 make check-code-style
   check-shellcheck:
     runs-on: ubuntu-latest
     steps:
diff --git a/bin/format-code.py b/bin/format-code.py
index 59a464d4..f8eaf963 100755
--- a/bin/format-code.py
+++ b/bin/format-code.py
@@ -172,7 +172,9 @@ def main():
             return 1
 
     # Locate `clang-format` executable:
-    clang_format_exe = shutil.which('clang-format')
+    clang_format_exe = os.getenv('KALEIDOSCOPE_CODE_FORMATTER')
+    if clang_format_exe is None:
+        clang_format_exe = shutil.which('clang-format')
     logging.debug("Found `clang-format` executable: %s", clang_format_exe)
     clang_format_cmd = [clang_format_exe, '-i']
     if opts.loglevel <= logging.INFO: