diff --git a/.github/workflows/build-and-test-api.yml b/.github/workflows/build-and-test-api.yml
index e5a76c5e..81821df5 100644
--- a/.github/workflows/build-and-test-api.yml
+++ b/.github/workflows/build-and-test-api.yml
@@ -19,7 +19,7 @@ jobs:
 
     strategy:
       matrix:
-        dotnet-major-version: [8]
+        dotnet-major-version: [9]
         dotnet-minor-version: [0]
 
     steps:
diff --git a/.github/workflows/publish-api.yml b/.github/workflows/publish-api.yml
index 07b3ab14..4358c940 100644
--- a/.github/workflows/publish-api.yml
+++ b/.github/workflows/publish-api.yml
@@ -24,7 +24,7 @@ jobs:
 
     strategy:
       matrix:
-        dotnet-major-version: [8]
+        dotnet-major-version: [9]
         dotnet-minor-version: [0]
 
     steps: