diff --git a/src/dotnetcore31/AzureFunctions.Cosmos/AzureFunctions.Cosmos.csproj b/src/dotnetcore31/AzureFunctions.Cosmos/AzureFunctions.Cosmos.csproj
index d4215cd1..a2bf034b 100644
--- a/src/dotnetcore31/AzureFunctions.Cosmos/AzureFunctions.Cosmos.csproj
+++ b/src/dotnetcore31/AzureFunctions.Cosmos/AzureFunctions.Cosmos.csproj
@@ -6,7 +6,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.Azure.Cosmos" Version="3.26.1"/>
     <PackageReference Include="Microsoft.Azure.Functions.Extensions" Version="1.1.0"/>
-    <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.CosmosDB" Version="3.0.10"/>
+    <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.CosmosDB" Version="4.3.1"/>
     <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.Storage" Version="4.0.5"/>
     <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="3.1.2"/>
   </ItemGroup>