diff --git a/src/Elasticsearch.Net/Elasticsearch.Net.csproj b/src/Elasticsearch.Net/Elasticsearch.Net.csproj
index 118697cfc5d..b1c5d4da80f 100644
--- a/src/Elasticsearch.Net/Elasticsearch.Net.csproj
+++ b/src/Elasticsearch.Net/Elasticsearch.Net.csproj
@@ -20,7 +20,7 @@
     
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Microsoft.CSharp" Version="4.6.0-preview3.19128.7" />
+    <PackageReference Include="Microsoft.CSharp" Version="4.6.0" />
     <PackageReference Include="System.Buffers" Version="4.5.0" />
     <PackageReference Include="System.Diagnostics.DiagnosticSource" Version="4.5.1" />