diff --git a/.github/workflows/github-action-build-and-deploy.yml b/.github/workflows/github-action-build-and-deploy.yml
index 5a67a9bd..f6692ae6 100644
--- a/.github/workflows/github-action-build-and-deploy.yml
+++ b/.github/workflows/github-action-build-and-deploy.yml
@@ -2,7 +2,7 @@
 name: Build and deploy solution to Azure
 
 env:
-  DOTNET_VERSION: '8.0.x'
+  DOTNET_VERSION: '9.0.x'
 
 on:
   push:
diff --git a/.github/workflows/github-action-build-and-test.yml b/.github/workflows/github-action-build-and-test.yml
index 1f4bcff3..d6748a78 100644
--- a/.github/workflows/github-action-build-and-test.yml
+++ b/.github/workflows/github-action-build-and-test.yml
@@ -2,7 +2,7 @@
 name: Build and test solution
 
 env:
-  DOTNET_VERSION: '8.0.x'
+  DOTNET_VERSION: '9.0.x'
 
 on:
   pull_request: