diff --git a/.github/workflows/dotnet-ec2-adot-sigv4-test.yml b/.github/workflows/dotnet-ec2-adot-sigv4-test.yml
index b708a7ec4..bca33437a 100644
--- a/.github/workflows/dotnet-ec2-adot-sigv4-test.yml
+++ b/.github/workflows/dotnet-ec2-adot-sigv4-test.yml
@@ -12,7 +12,7 @@ on:
         required: true
         type: string
       dotnet-version:
-        description: "Currently support version 6.0, 8.0"
+        description: "Currently support version 8.0, 9.0"
         required: false
         type: string
         default: '8.0'
diff --git a/.github/workflows/dotnet-ec2-default-test.yml b/.github/workflows/dotnet-ec2-default-test.yml
index 6351daa92..127ffb50f 100644
--- a/.github/workflows/dotnet-ec2-default-test.yml
+++ b/.github/workflows/dotnet-ec2-default-test.yml
@@ -19,7 +19,7 @@ on:
         required: true
         type: string
       dotnet-version:
-        description: "Currently support version 6.0, 8.0"
+        description: "Currently support version 8.0, 9.0"
         required: false
         type: string
         default: '8.0'
diff --git a/.github/workflows/dotnet-sample-app-s3-deploy.yml b/.github/workflows/dotnet-sample-app-s3-deploy.yml
index 6186a4f93..808d6cd10 100644
--- a/.github/workflows/dotnet-sample-app-s3-deploy.yml
+++ b/.github/workflows/dotnet-sample-app-s3-deploy.yml
@@ -18,7 +18,7 @@ jobs:
                       'ap-southeast-2','ap-southeast-3','ap-southeast-4','ca-central-1','eu-central-1','eu-central-2','eu-north-1',
                       'eu-south-1','eu-south-2','eu-west-1','eu-west-2','eu-west-3','il-central-1','me-central-1','me-south-1', 'sa-east-1',
                       'us-east-1','us-east-2', 'us-west-1', 'us-west-2' ]
-        dotnet-version: [ '6.0', '8.0' ]
+        dotnet-version: [ '8.0', '9.0' ]
     runs-on: ubuntu-latest
     env:
       DEFAULT_VERSION: '8.0'