diff --git a/.github/workflows/build-frontends.yml b/.github/workflows/build-frontends.yml
index 894202f2c..f49007ef9 100644
--- a/.github/workflows/build-frontends.yml
+++ b/.github/workflows/build-frontends.yml
@@ -21,7 +21,7 @@ jobs:
         
     - uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: '8.0.x'
+        dotnet-version: '9.0.x'
         dotnet-quality: 'ga'
 
     - name: Install dependencies
diff --git a/.github/workflows/build-ilspy.yml b/.github/workflows/build-ilspy.yml
index cf86850ae..382f1686f 100644
--- a/.github/workflows/build-ilspy.yml
+++ b/.github/workflows/build-ilspy.yml
@@ -34,7 +34,7 @@ jobs:
 
     - uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: '8.0.x'
+        dotnet-version: '9.0.x'
         dotnet-quality: 'ga'
       env:
         DOTNET_INSTALL_DIR: ${{ runner.temp }}/.dotnet
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 1508ed57f..d82444df0 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -37,7 +37,7 @@ jobs:
 
     - uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: '8.0.x'
+        dotnet-version: '9.0.x'
         dotnet-quality: 'ga'
 
     - name: Build