diff --git a/test/Confluent.Kafka.IntegrationTests/Confluent.Kafka.IntegrationTests.csproj b/test/Confluent.Kafka.IntegrationTests/Confluent.Kafka.IntegrationTests.csproj
index f05f426c9..2a09a4329 100644
--- a/test/Confluent.Kafka.IntegrationTests/Confluent.Kafka.IntegrationTests.csproj
+++ b/test/Confluent.Kafka.IntegrationTests/Confluent.Kafka.IntegrationTests.csproj
@@ -19,7 +19,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.5.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="Xunit.SkippableFact" Version="1.3.12" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1" />
diff --git a/test/Confluent.Kafka.UnitTests/Confluent.Kafka.UnitTests.csproj b/test/Confluent.Kafka.UnitTests/Confluent.Kafka.UnitTests.csproj
old mode 100755
new mode 100644
index 360e3e5f0..51c0a8509
--- a/test/Confluent.Kafka.UnitTests/Confluent.Kafka.UnitTests.csproj
+++ b/test/Confluent.Kafka.UnitTests/Confluent.Kafka.UnitTests.csproj
@@ -15,7 +15,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.5.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
     <PackageReference Include="xunit" Version="2.3.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.3.1" />
     <PackageReference Include="Moq" Version="4.8.2" />
diff --git a/test/Confluent.SchemaRegistry.IntegrationTests/Confluent.SchemaRegistry.IntegrationTests.csproj b/test/Confluent.SchemaRegistry.IntegrationTests/Confluent.SchemaRegistry.IntegrationTests.csproj
old mode 100755
new mode 100644
index 4c43e251b..f139521a7
--- a/test/Confluent.SchemaRegistry.IntegrationTests/Confluent.SchemaRegistry.IntegrationTests.csproj
+++ b/test/Confluent.SchemaRegistry.IntegrationTests/Confluent.SchemaRegistry.IntegrationTests.csproj
@@ -22,7 +22,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.0.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
     <PackageReference Include="xunit" Version="2.2.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.2.0" />
     <PackageReference Include="Google.Protobuf" Version="3.11.2" />
diff --git a/test/Confluent.SchemaRegistry.Serdes.IntegrationTests/Confluent.SchemaRegistry.Serdes.IntegrationTests.csproj b/test/Confluent.SchemaRegistry.Serdes.IntegrationTests/Confluent.SchemaRegistry.Serdes.IntegrationTests.csproj
index ad9acc821..7cb2d168e 100644
--- a/test/Confluent.SchemaRegistry.Serdes.IntegrationTests/Confluent.SchemaRegistry.Serdes.IntegrationTests.csproj
+++ b/test/Confluent.SchemaRegistry.Serdes.IntegrationTests/Confluent.SchemaRegistry.Serdes.IntegrationTests.csproj
@@ -28,7 +28,7 @@
   <ItemGroup>
     <PackageReference Include="Apache.Avro" Version="1.10.1" />
     <PackageReference Include="System.Diagnostics.DiagnosticSource" Version="4.3.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.5.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
     <PackageReference Include="xunit" Version="2.3.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.3.1" />
   </ItemGroup>
diff --git a/test/Confluent.SchemaRegistry.Serdes.UnitTests/Confluent.SchemaRegistry.Serdes.UnitTests.csproj b/test/Confluent.SchemaRegistry.Serdes.UnitTests/Confluent.SchemaRegistry.Serdes.UnitTests.csproj
index dd7189c5b..458287a4d 100644
--- a/test/Confluent.SchemaRegistry.Serdes.UnitTests/Confluent.SchemaRegistry.Serdes.UnitTests.csproj
+++ b/test/Confluent.SchemaRegistry.Serdes.UnitTests/Confluent.SchemaRegistry.Serdes.UnitTests.csproj
@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.0.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
     <PackageReference Include="Moq" Version="4.7.99" />
     <PackageReference Include="xunit" Version="2.2.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.2.0" />
diff --git a/test/Confluent.SchemaRegistry.UnitTests/Confluent.SchemaRegistry.UnitTests.csproj b/test/Confluent.SchemaRegistry.UnitTests/Confluent.SchemaRegistry.UnitTests.csproj
index 126ab95c3..310234803 100644
--- a/test/Confluent.SchemaRegistry.UnitTests/Confluent.SchemaRegistry.UnitTests.csproj
+++ b/test/Confluent.SchemaRegistry.UnitTests/Confluent.SchemaRegistry.UnitTests.csproj
@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-      <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.5.0" />
+      <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
       <PackageReference Include="xunit" Version="2.3.1" />
       <PackageReference Include="xunit.runner.visualstudio" Version="2.3.1" />
   </ItemGroup>