diff --git a/tests/Proto.TestFixtures/Proto.TestFixtures.csproj b/tests/Proto.TestFixtures/Proto.TestFixtures.csproj
index 312ca54f23..678e868934 100644
--- a/tests/Proto.TestFixtures/Proto.TestFixtures.csproj
+++ b/tests/Proto.TestFixtures/Proto.TestFixtures.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
         <IsTestProject>false</IsTestProject>
         <LangVersion>10</LangVersion>
@@ -11,7 +11,7 @@
         <PackageReference Remove="xunit"/>
         <PackageReference Remove="xunit.runner.visualstudio"/>
         <PackageReference Include="Microsoft.Extensions.Configuration" Version="6.0.0"/>
-        <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="6.0.0"/>
+        <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="7.0.0"/>
         <PackageReference Include="Microsoft.Extensions.Configuration.FileExtensions" Version="6.0.0"/>
         <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="6.0.0"/>
     </ItemGroup>