diff --git a/SiteA/SiteA.csproj b/SiteA/SiteA.csproj
index 615a08e..56812f4 100644
--- a/SiteA/SiteA.csproj
+++ b/SiteA/SiteA.csproj
@@ -23,7 +23,7 @@
     <PackageReference Include="Microsoft.AspNetCore.Server.IISIntegration" Version="1.1.1" />
     <PackageReference Include="Microsoft.AspNetCore.Server.Kestrel" Version="1.1.1" />
     <PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="1.1.1" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="1.1.1" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="2.1.1" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="1.1.1" />
     <PackageReference Include="Microsoft.Extensions.Logging" Version="1.1.1" />
     <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="1.1.1" />
diff --git a/SiteB/SiteB.csproj b/SiteB/SiteB.csproj
index 9100001..5f9dd75 100644
--- a/SiteB/SiteB.csproj
+++ b/SiteB/SiteB.csproj
@@ -24,7 +24,7 @@
     <PackageReference Include="Microsoft.AspNetCore.Server.IISIntegration" Version="1.1.1" />
     <PackageReference Include="Microsoft.AspNetCore.Server.Kestrel" Version="1.1.1" />
     <PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="1.1.1" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="1.1.1" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="2.1.1" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="1.1.1" />
     <PackageReference Include="Microsoft.Extensions.Logging" Version="1.1.1" />
     <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="1.1.1" />