diff --git a/.github/workflows/Build.yml b/.github/workflows/Build.yml
index ba6c46a..8c08dff 100644
--- a/.github/workflows/Build.yml
+++ b/.github/workflows/Build.yml
@@ -10,7 +10,7 @@ on:
 
 jobs:
   PC_Application_Ubuntu:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v1
 
@@ -21,7 +21,7 @@ jobs:
 
       - name: Get build timestamp
         id: id_date
-        run: echo "::set-output name=timestamp::$(date +%Y-%m-%d-%H-%M-%S)"
+        run: echo "timestamp=$(date +%Y-%m-%d-%H-%M-%S)" >> $GITHUB_OUTPUT
 
       - name: Get app version
         id: id_version
@@ -30,7 +30,7 @@ jobs:
           fw_major=`grep -oP '(?<=FW_MAJOR=)[0-9]+' LibreVNA-GUI.pro`
           fw_minor=`grep -oP '(?<=FW_MINOR=)[0-9]+' LibreVNA-GUI.pro`
           fw_patch=`grep -oP '(?<=FW_PATCH=)[0-9]+' LibreVNA-GUI.pro` 
-          echo "::set-output name=app_version::v$fw_major.$fw_minor.$fw_patch-${{steps.id_date.outputs.timestamp}}"
+          echo "app_version=v$fw_major.$fw_minor.$fw_patch-${{steps.id_date.outputs.timestamp}}" >> $GITHUB_OUTPUT
 
       - name: Build application
         run: |
@@ -56,21 +56,21 @@ jobs:
       - name: Install Qt
         uses: jurplel/install-qt-action@v2
         with:
-          version: '5.15.1'
+          version: '5.15.2'
           arch: 'win64_mingw81'
       
       - name: Download libusb
         run: |
-          curl -o libusb.7z -L https://github.com/libusb/libusb/releases/download/v1.0.23/libusb-1.0.23.7z
+          curl -o libusb.7z -L https://github.com/libusb/libusb/releases/download/v1.0.25/libusb-1.0.25.7z
           7z x libusb.7z -r -olibusb
-          Xcopy /E /I /Y libusb\include ..\Qt\5.15.1\mingw81_64\include
+          Xcopy /E /I /Y libusb\include ..\Qt\5.15.2\mingw81_64\include
           Xcopy /E /I /Y libusb\MinGW64\static Software\PC_Application\LibreVNA-GUI
         shell: cmd
 
       - name: Get build timestamp
         shell: msys2 {0}
         id: id_date
-        run: echo "::set-output name=timestamp::$(date +%Y-%m-%d-%H-%M-%S)"
+        run: echo "timestamp=$(date +%Y-%m-%d-%H-%M-%S)" >> $GITHUB_OUTPUT
 
       - name: Get app version
         id: id_version
@@ -80,7 +80,7 @@ jobs:
           fw_major=`grep -oP '(?<=FW_MAJOR=)[0-9]+' LibreVNA-GUI.pro`
           fw_minor=`grep -oP '(?<=FW_MINOR=)[0-9]+' LibreVNA-GUI.pro`
           fw_patch=`grep -oP '(?<=FW_PATCH=)[0-9]+' LibreVNA-GUI.pro` 
-          echo "::set-output name=app_version::v$fw_major.$fw_minor.$fw_patch-${{steps.id_date.outputs.timestamp}}"
+          echo "app_version=v$fw_major.$fw_minor.$fw_patch-${{steps.id_date.outputs.timestamp}}" >> $GITHUB_OUTPUT
 
       - name: Build application
         run: |
@@ -109,7 +109,7 @@ jobs:
           path: Software/PC_Application/LibreVNA-GUI/release
 
   PC_Application_OSX:
-    runs-on: macos-10.15
+    runs-on: macos-11
     steps:
       - uses: actions/checkout@v1
 
@@ -123,7 +123,7 @@ jobs:
           
       - name: Get build timestamp
         id: id_date
-        run: echo "::set-output name=timestamp::$(date +%Y-%m-%d-%H-%M-%S)"
+        run: echo "timestamp=$(date +%Y-%m-%d-%H-%M-%S)" >> $GITHUB_OUTPUT
 
       - name: Get app version
         id: id_version
@@ -132,7 +132,7 @@ jobs:
           fw_major=`pcregrep -o '(?<=FW_MAJOR=)[0-9]+' LibreVNA-GUI.pro`
           fw_minor=`pcregrep -o '(?<=FW_MINOR=)[0-9]+' LibreVNA-GUI.pro`
           fw_patch=`pcregrep -o '(?<=FW_PATCH=)[0-9]+' LibreVNA-GUI.pro` 
-          echo "::set-output name=app_version::v$fw_major.$fw_minor.$fw_patch-${{steps.id_date.outputs.timestamp}}"
+          echo "app_version=v$fw_major.$fw_minor.$fw_patch-${{steps.id_date.outputs.timestamp}}" >> $GITHUB_OUTPUT
 
       - name: Build application
         run: |
@@ -162,7 +162,7 @@ jobs:
         
       - name: Get build timestamp
         id: id_date
-        run: echo "::set-output name=timestamp::$(date +%Y-%m-%d-%H-%M-%S)"
+        run: echo "timestamp=$(date +%Y-%m-%d-%H-%M-%S)" >> $GITHUB_OUTPUT
 
       - name: Get app version
         id: id_version
@@ -172,7 +172,7 @@ jobs:
           fw_minor=`grep -oP '(?<=FW_MINOR=)[0-9]+' Makefile`
           fw_patch=`grep -oP '(?<=FW_PATCH=)[0-9]+' Makefile`
           hw_revision=`grep "DHW_REVISION=" Makefile | sed "s/-DHW_REVISION=\"'//" | sed "sr'\" [\]rr"`
-          echo "::set-output name=app_version::hw-rev-$hw_revision-v$fw_major.$fw_minor.$fw_patch-${{steps.id_date.outputs.timestamp}}"
+          echo "app_version=hw-rev-$hw_revision-v$fw_major.$fw_minor.$fw_patch-${{steps.id_date.outputs.timestamp}}" >> $GITHUB_OUTPUT
 
       - name: Build application
         run: |
diff --git a/.github/workflows/Test.yml b/.github/workflows/Test.yml
index 10eea7e..d692385 100644
--- a/.github/workflows/Test.yml
+++ b/.github/workflows/Test.yml
@@ -10,7 +10,7 @@ on:
 
 jobs:
   Tests:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v1