diff --git a/OpenApiWithAzureFunctions.OpenApi/OpenApiWithAzureFunctions.OpenApi.csproj b/OpenApiWithAzureFunctions.OpenApi/OpenApiWithAzureFunctions.OpenApi.csproj
index 1545160..82e2eb5 100644
--- a/OpenApiWithAzureFunctions.OpenApi/OpenApiWithAzureFunctions.OpenApi.csproj
+++ b/OpenApiWithAzureFunctions.OpenApi/OpenApiWithAzureFunctions.OpenApi.csproj
@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.OpenApi" Version="1.2.3" />
+    <PackageReference Include="Microsoft.OpenApi" Version="1.4.3" />
     <PackageReference Include="Microsoft.OpenApi.Readers" Version="1.2.3" />
   </ItemGroup>