diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9f03d464eb..013f6a1628 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -48,7 +48,6 @@ jobs:
       - uses: actions/checkout@v2
       - name: Install dependencies
         run: |
-          sudo rm -f /etc/apt/sources.list.d/dotnetdev.list /etc/apt/sources.list.d/microsoft-prod.list; sudo apt-get update;
           sudo apt-get install --quiet -y libssl-dev sqlite3 libsqlite3-dev valgrind
           sudo apt-get install --quiet -y libglfw3 libglfw3-dev  libfreetype6-dev  libxi-dev libxcursor-dev libasound2-dev
           ## sudo apt-get install --quiet -y libsdl2-dev libsdl2-ttf-dev libsdl2-mixer-dev libsdl2-image-dev
@@ -111,7 +110,6 @@ jobs:
       - uses: actions/checkout@v2
       - name: Install dependencies
         run: |
-          sudo rm -f /etc/apt/sources.list.d/dotnetdev.list /etc/apt/sources.list.d/microsoft-prod.list; sudo apt-get update;
           sudo apt-get install --quiet -y libssl-dev sqlite3 libsqlite3-dev valgrind
           sudo apt-get install --quiet -y libglfw3 libglfw3-dev  libfreetype6-dev  libxi-dev libxcursor-dev libasound2-dev
           sudo apt-get install --quiet -y libgc-dev
@@ -207,8 +205,6 @@ jobs:
   ## C++
       - name: Install C++ dependencies
         run: |
-          sudo rm -f /etc/apt/sources.list.d/dotnetdev.list /etc/apt/sources.list.d/microsoft-prod.list;
-          sudo apt-get update;
           sudo apt-get install --quiet -y postgresql libpq-dev libssl-dev sqlite3 libsqlite3-dev
           sudo apt-get install --quiet -y libglfw3 libglfw3-dev  libfreetype6-dev  libxi-dev libxcursor-dev libasound2-dev
           sudo apt-get install --quiet -y valgrind g++-9
@@ -225,8 +221,6 @@ jobs:
   ## Cross compilation
       - name: Install dependencies
         run: |
-          sudo rm -f /etc/apt/sources.list.d/dotnetdev.list /etc/apt/sources.list.d/microsoft-prod.list
-          sudo apt-get update
           sudo apt install --quiet -y mingw-w64 wine-stable winetricks
       - name: Build V
         run: make -j4
@@ -376,8 +370,6 @@ jobs:
           node-version: 12.x
       - name: Install dependencies
         run: |
-          sudo rm -f /etc/apt/sources.list.d/dotnetdev.list /etc/apt/sources.list.d/microsoft-prod.list;
-          sudo apt-get update;
           sudo apt-get install --quiet -y postgresql libpq-dev libssl-dev sqlite3 libsqlite3-dev valgrind
           sudo apt-get install --quiet -y libglfw3 libglfw3-dev  libfreetype6-dev  libxi-dev libxcursor-dev libasound2-dev
           ## sudo apt-get install --quiet -y libsdl2-dev libsdl2-ttf-dev libsdl2-mixer-dev libsdl2-image-dev
@@ -475,8 +467,6 @@ jobs:
           node-version: 12.x
       - name: Install dependencies
         run: |
-          sudo rm -f /etc/apt/sources.list.d/dotnetdev.list /etc/apt/sources.list.d/microsoft-prod.list;
-          sudo apt-get update;
           sudo apt-get install --quiet -y postgresql libpq-dev libssl-dev sqlite3 libsqlite3-dev valgrind
           sudo apt-get install --quiet -y libglfw3 libglfw3-dev  libfreetype6-dev  libxi-dev libxcursor-dev libasound2-dev
           sudo apt-get install clang
@@ -555,8 +545,6 @@ jobs:
           node-version: 12.x
       - name: Install dependencies
         run: |
-          sudo rm -f /etc/apt/sources.list.d/dotnetdev.list /etc/apt/sources.list.d/microsoft-prod.list;
-          sudo apt-get update;
           sudo apt-get install --quiet -y postgresql libpq-dev libssl-dev sqlite3 libsqlite3-dev valgrind
           sudo apt-get install --quiet -y libglfw3 libglfw3-dev  libfreetype6-dev  libxi-dev libxcursor-dev libasound2-dev
           sudo apt-get install clang
@@ -578,8 +566,6 @@ jobs:
           node-version: 12.x
       - name: Install dependencies
         run: |
-          sudo rm -f /etc/apt/sources.list.d/dotnetdev.list /etc/apt/sources.list.d/microsoft-prod.list;
-          sudo apt-get update;
           sudo apt-get install --quiet -y postgresql libpq-dev libssl-dev sqlite3 libsqlite3-dev valgrind
           sudo apt-get install --quiet -y libglfw3 libglfw3-dev  libfreetype6-dev  libxi-dev libxcursor-dev libasound2-dev
           ## sudo apt-get install --quiet -y libsdl2-dev libsdl2-ttf-dev libsdl2-mixer-dev libsdl2-image-dev
@@ -600,8 +586,6 @@ jobs:
           node-version: 12.x
       - name: Install dependencies
         run: |
-          sudo rm -f /etc/apt/sources.list.d/dotnetdev.list /etc/apt/sources.list.d/microsoft-prod.list;
-          sudo apt-get update;
           sudo apt-get install --quiet -y postgresql libpq-dev libssl-dev sqlite3 libsqlite3-dev valgrind
           sudo apt-get install --quiet -y libglfw3 libglfw3-dev  libfreetype6-dev  libxi-dev libxcursor-dev libasound2-dev
           sudo apt-get install clang
@@ -652,8 +636,6 @@ jobs:
           node-version: 12.x
       - name: Install dependencies
         run: |
-          sudo rm -f /etc/apt/sources.list.d/dotnetdev.list /etc/apt/sources.list.d/microsoft-prod.list;
-          sudo apt-get update;
           sudo apt-get install --quiet -y postgresql libpq-dev libssl-dev sqlite3 libsqlite3-dev valgrind
           sudo apt-get install --quiet -y libglfw3 libglfw3-dev  libfreetype6-dev  libxi-dev libxcursor-dev libasound2-dev
           sudo apt-get install clang
@@ -679,8 +661,6 @@ jobs:
           node-version: 12.x
       - name: Install dependencies
         run: |
-          sudo rm -f /etc/apt/sources.list.d/dotnetdev.list /etc/apt/sources.list.d/microsoft-prod.list;
-          sudo apt-get update;
           sudo apt-get install --quiet -y postgresql libpq-dev libssl-dev sqlite3 libsqlite3-dev valgrind
           sudo apt-get install --quiet -y libglfw3 libglfw3-dev  libfreetype6-dev  libxi-dev libxcursor-dev libasound2-dev
           sudo apt-get install clang
@@ -745,8 +725,6 @@ jobs:
   #         node-version: 12.x
   #     - name: Install dependencies
   #       run: |
-  #          sudo rm -f /etc/apt/sources.list.d/dotnetdev.list /etc/apt/sources.list.d/microsoft-prod.list;
-  #          sudo apt-get update;
   #          sudo apt-get install --quiet -y musl musl-tools libssl-dev sqlite3 libsqlite3-dev valgrind
   #          sudo apt-get install --quiet -y libsdl2-dev libsdl2-ttf-dev libsdl2-mixer-dev libsdl2-image-dev
   #     - name: Build v