diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index a9b8390..f6a669c 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -4,14 +4,14 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - run: sudo apt install g++
+      - run: sudo apt install clang
       - run: chmod +x build.sh
       - run: ./build.sh
   run-and-compile-mac:
     runs-on: mac-latest
     steps:
       - uses: actions/checkout@v4
-      - run: sudo apt install g++
+      - run: brew install llvm
       - run: chmod +x build.sh
       - run: ./build.sh
   run-and-compile-windows:
diff --git a/build.sh b/build.sh
index a640b25..601f431 100644
--- a/build.sh
+++ b/build.sh
@@ -1,3 +1,3 @@
 #!/usr/bin/env bash
-gcc -o bld build_main.cpp -g
+clang -o bld build_main.cpp -g
 ./bld