diff --git a/src/RxFree.SourceTests.Legacy/RxFree.SourceTests.Legacy.csproj b/src/RxFree.SourceTests.Legacy/RxFree.SourceTests.Legacy.csproj
index e4c6ff4..df637d0 100644
--- a/src/RxFree.SourceTests.Legacy/RxFree.SourceTests.Legacy.csproj
+++ b/src/RxFree.SourceTests.Legacy/RxFree.SourceTests.Legacy.csproj
@@ -14,7 +14,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.5.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.0" />
     <PackageReference Include="xunit" Version="2.5.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.0" />
   </ItemGroup>
diff --git a/src/RxFree.SourceTests.Nullable/RxFree.SourceTests.Nullable.csproj b/src/RxFree.SourceTests.Nullable/RxFree.SourceTests.Nullable.csproj
index 326f3e9..0c14088 100644
--- a/src/RxFree.SourceTests.Nullable/RxFree.SourceTests.Nullable.csproj
+++ b/src/RxFree.SourceTests.Nullable/RxFree.SourceTests.Nullable.csproj
@@ -14,7 +14,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.5.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.0" />
     <PackageReference Include="xunit" Version="2.5.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.0" />
   </ItemGroup>
diff --git a/src/RxFree.SourceTests/RxFree.SourceTests.csproj b/src/RxFree.SourceTests/RxFree.SourceTests.csproj
index 18f49bf..dfc5748 100644
--- a/src/RxFree.SourceTests/RxFree.SourceTests.csproj
+++ b/src/RxFree.SourceTests/RxFree.SourceTests.csproj
@@ -15,7 +15,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.5.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.0" />
     <PackageReference Include="xunit" Version="2.5.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.0" />
   </ItemGroup>
diff --git a/src/RxFree.Tests/RxFree.Tests.csproj b/src/RxFree.Tests/RxFree.Tests.csproj
index 6691447..b617869 100644
--- a/src/RxFree.Tests/RxFree.Tests.csproj
+++ b/src/RxFree.Tests/RxFree.Tests.csproj
@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.5.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.0" />
     <PackageReference Include="xunit" Version="2.5.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.0" />
   </ItemGroup>