diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index b85445e..3beb6df 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -13,7 +13,7 @@ variables:
   Solution: 'src/NLog.MailKit.sln'
   BuildPlatform: 'Any CPU'
   BuildConfiguration: 'Release'
-  Version: '5.2.1'
+  Version: '5.3'
   FullVersion: '$(Version).$(Build.BuildId)'
 
 steps: