diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index d3e6acc..b84b82e 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -26,7 +26,7 @@ env:
 jobs:
   build:
     name: Build and Test
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
     - name: 'Harden Runner'
       uses: step-security/harden-runner@0080882f6c36860b6ba35c610c98ce87d4e2f26f # v2.10.2
@@ -40,6 +40,8 @@ jobs:
  
     - name: 'Setup .NET SDK'
       uses: actions/setup-dotnet@87b7050bc53ea08284295505d98d2aa94301e852 # v4.2.0
+      with:
+        dotnet-version: 9.0.x
 
     - name: 'Restore external dependencies'
       run: dotnet restore
diff --git a/.github/workflows/ci-manual-build-test-sign.yml b/.github/workflows/ci-manual-build-test-sign.yml
index 4817025..d968c2f 100644
--- a/.github/workflows/ci-manual-build-test-sign.yml
+++ b/.github/workflows/ci-manual-build-test-sign.yml
@@ -45,6 +45,8 @@ jobs:
  
     - name: 'Setup .NET SDK'
       uses: actions/setup-dotnet@87b7050bc53ea08284295505d98d2aa94301e852 # v4.2.0
+      with:
+        dotnet-version: 9.0.x
 
     - name: 'Build'
       run: dotnet build --configuration Release --property:PublicRelease=${{ inputs.public_release }}
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 7966862..6f6b5dc 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -34,7 +34,7 @@ env:
 jobs:
   analyze:
     name: Analyze
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     permissions:
       actions: read
       contents: read
@@ -60,6 +60,8 @@ jobs:
 
     - name: 'Setup .NET SDK'
       uses: actions/setup-dotnet@87b7050bc53ea08284295505d98d2aa94301e852 # v4.2.0
+      with:
+        dotnet-version: 9.0.x
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
diff --git a/.github/workflows/upload-coverage-report.yml b/.github/workflows/upload-coverage-report.yml
index 1072514..9a67098 100644
--- a/.github/workflows/upload-coverage-report.yml
+++ b/.github/workflows/upload-coverage-report.yml
@@ -10,7 +10,7 @@ on:
 
 jobs:
   prCoverageComment:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     permissions:
       pull-requests: write
     if: