diff --git a/Directory.Build.props b/Directory.Build.props
index d85c6cdd88..fda050133a 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <PropertyGroup>
-    <VersionPrefix>3.865.0</VersionPrefix>
+    <VersionPrefix>3.866.0</VersionPrefix>
     <VersionSuffix></VersionSuffix>
     <VersionSuffix Condition=" '$(VersionSuffix)' != '' AND '$(BuildNumber)' != '' ">$(VersionSuffix)-$(BuildNumber)</VersionSuffix>
     <NoWarn>$(NoWarn);S3875;S4457</NoWarn>