diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 5a6efe3..13de4cb 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -12,14 +12,24 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [windows-latest, ubuntu-latest, macOS-latest]
+#         os: [windows-latest, ubuntu-latest]
+        os: [ubuntu-latest]
 
     steps:
     - uses: actions/checkout@v1
 
+    - name: Upgrade Compiler
+      run: sudo apt install -y software-properties-common && sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test && sudo apt install -y g++-9 && sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-9 90 --slave /usr/bin/g++ g++ /usr/bin/g++-9 --slave /usr/bin/gcov gcov /usr/bin/gcov-9
+      if: matrix.os == 'ubuntu-latest'
+      
     - name: Install conan package manager
-      run: pip install conan
+      run: sudo pip install conan
+      if: matrix.os == 'ubuntu-latest' || matrix.os == 'macOS-latest'
 
+    - name: Install conan package manager
+      run: pip install conan
+      if: matrix.os == 'windows-latest'
+      
     - 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
@@ -47,4 +57,4 @@ jobs:
     #   shell: bash
     #   # Execute tests defined by the CMake configuration.  
     #   # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
-    #   run: make tests && ./tests
\ No newline at end of file
+    #   run: make tests && ./tests