diff --git a/.github/workflows/build-ubuntu.yml b/.github/workflows/build-ubuntu.yml
index e54769f..b7fec88 100644
--- a/.github/workflows/build-ubuntu.yml
+++ b/.github/workflows/build-ubuntu.yml
@@ -9,7 +9,7 @@ on:
 env:
   # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
   BUILD_TYPE: Release
-  APT_INSTALL_LINUX: 'sudo apt -y install build-essential cmake libboost-all-dev miniupnpc libunbound-dev graphviz doxygen libunwind8-dev pkg-config libssl-dev libzmq3-dev libsodium-dev libhidapi-dev libnorm-dev libusb-1.0-0-dev libpgm-dev libprotobuf-dev protobuf-compiler ccache'
+  APT_INSTALL_LINUX: 'sudo apt -y install build-essential cmake libboost-all-dev miniupnpc libunbound-dev libunwind8-dev pkg-config libssl-dev libzmq3-dev libsodium-dev libhidapi-dev libnorm-dev libusb-1.0-0-dev libpgm-dev libprotobuf-dev protobuf-compiler'
   APT_SET_CONF: |
         echo "Acquire::Retries \"3\";"         | sudo tee -a /etc/apt/apt.conf.d/80-custom
         echo "Acquire::http::Timeout \"120\";" | sudo tee -a /etc/apt/apt.conf.d/80-custom
@@ -20,7 +20,7 @@ jobs:
     runs-on: ${{matrix.os}}
     strategy:
       matrix:
-        os: [ubuntu-latest, ubuntu-22.04, ubuntu-20.04, macos-latest, macos-12, macos-11]
+        os: [ubuntu-latest, ubuntu-22.04, ubuntu-20.04, macos-latest, macos-12]
         rmq: [WITH_RMQ=ON, WITH_RMQ=OFF]
     steps:
     - name: set apt conf (Debian based Linux)
@@ -38,13 +38,13 @@ jobs:
 
     - name: Install dependencies (MacOS)
       if: matrix.os == 'macos-latest' || matrix.os == 'macos-12' || matrix.os == 'macos-11'
-      run: HOMEBREW_NO_AUTO_UPDATE=1 brew install boost hidapi openssl zmq libpgm miniupnpc expat libunwind-headers protobuf ccache
+      run: HOMEBREW_NO_AUTO_UPDATE=1 brew install boost hidapi openssl zmq libpgm miniupnpc expat libunwind-headers protobuf
     - name: Install RabbitMQ iff WITH_RMQ (MacOS)
       if: matrix.rmq == 'WITH_RMQ=ON' && (matrix.os == 'macos-latest' || matrix.os == 'macos-12' || matrix.os == 'macos-11')
       run: HOMEBREW_NO_AUTO_UPDATE=1 brew install rabbitmq-c
   
     - name: Checkout Monero Source
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: monero-project/monero
         path: ${{github.workspace}}/monero/
@@ -57,7 +57,7 @@ jobs:
       run: cd ${{github.workspace}}/monero/build && make -j$(nproc) daemon lmdb_lib multisig 
   
     - name: Checkout LWS Source
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         path: ${{github.workspace}}/lws