diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 76e2bf2..268287a 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -10,6 +10,7 @@ on:
   workflow_dispatch:
 
 env:
+  CMAKE_BUILD_DIR: ${{ github.workspace }}/cmake-build
   CXX: /usr/bin/clang-11
 
 jobs:
@@ -65,8 +66,8 @@ jobs:
             # 11
             deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-11 main
             deb-src http://apt.llvm.org/bionic/ llvm-toolchain-bionic-11 main
-      - run: cmake .
-      - run: make clang-tidy
+      - run: cmake -B $CMAKE_BUILD_DIR .
+      - run: make -f $CMAKE_BUILD_DIR/Makefile clang-tidy
   clang-format-check:
     runs-on: ubuntu-18.04
     steps:
@@ -100,5 +101,5 @@ jobs:
             # 11
             deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-11 main
             deb-src http://apt.llvm.org/bionic/ llvm-toolchain-bionic-11 main
-      - run: cmake .
-      - run: make clang-format-check
+      - run: cmake -B $CMAKE_BUILD_DIR .
+      - run: make -f $CMAKE_BUILD_DIR/Makefile clang-format-check