diff --git a/.github/workflows/cpp.yml b/.github/workflows/cpp.yml
index b45c651..da6689d 100644
--- a/.github/workflows/cpp.yml
+++ b/.github/workflows/cpp.yml
@@ -21,12 +21,6 @@ jobs:
           if [ "$RUNNER_OS" == "Linux" ]; then
             sudo add-apt-repository -y "deb http://archive.ubuntu.com/ubuntu `lsb_release -sc` main universe restricted multiverse"
             sudo apt-get update -y -qq
-          fi
-
-      - name: build
-        shell: bash
-        run: |
-          if [ "$RUNNER_OS" == "Linux" ]; then
             sudo apt-get update && sudo apt-get install xorg-dev libglu1-mesa-dev freeglut3-dev mesa-common-dev libsdl2-dev
           fi
           if [ "$RUNNER_OS" == "macOS" ]; then
@@ -40,6 +34,10 @@ jobs:
             echo "SDL2_LIB=${{ github.workspace }}/SDL2/SDL2-2.0.14/lib/x64" >> $GITHUB_ENV
             echo "SDL2_INCLUDE=${{ github.workspace }}/SDL2/SDL2-2.0.14/include" >> $GITHUB_ENV
           fi
+
+      - name: build
+        shell: bash
+        run: |          
           mkdir build
           cd build
           cmake ..