diff --git a/Content.Client/Content.Client.csproj b/Content.Client/Content.Client.csproj
index 04b1e3dd29..0ac62cc4ad 100644
--- a/Content.Client/Content.Client.csproj
+++ b/Content.Client/Content.Client.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <Import Project="..\RobustToolbox\MSBuild\Robust.Properties.targets" />
   <PropertyGroup>
     <!-- Work around https://github.com/dotnet/project-system/issues/4314 -->
@@ -14,7 +14,7 @@
   <Import Project="..\RobustToolbox\MSBuild\Robust.DefineConstants.targets" />
   <ItemGroup>
     <PackageReference Include="Nett" Version="0.15.0" />
-    <PackageReference Include="JetBrains.Annotations" Version="2020.3.0" PrivateAssets="All" />
+    <PackageReference Include="JetBrains.Annotations" Version="2021.3.0" PrivateAssets="All" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\RobustToolbox\Lidgren.Network\Lidgren.Network.csproj" />
diff --git a/Content.IntegrationTests/Content.IntegrationTests.csproj b/Content.IntegrationTests/Content.IntegrationTests.csproj
index 01d0ccbe14..2ca4927341 100644
--- a/Content.IntegrationTests/Content.IntegrationTests.csproj
+++ b/Content.IntegrationTests/Content.IntegrationTests.csproj
@@ -10,9 +10,9 @@
   </PropertyGroup>
   <Import Project="..\RobustToolbox\MSBuild\Robust.DefineConstants.targets" />
   <ItemGroup>
-    <PackageReference Include="NUnit" Version="3.13.1" />
-    <PackageReference Include="NUnit3TestAdapter" Version="3.17.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
+    <PackageReference Include="NUnit" Version="3.13.2" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.2.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Content.Client\Content.Client.csproj" />
diff --git a/Content.Server/Content.Server.csproj b/Content.Server/Content.Server.csproj
index 5bf3663da1..a31fde06bb 100644
--- a/Content.Server/Content.Server.csproj
+++ b/Content.Server/Content.Server.csproj
@@ -15,7 +15,7 @@
   </PropertyGroup>
   <Import Project="..\RobustToolbox\MSBuild\Robust.DefineConstants.targets" />
   <ItemGroup>
-    <PackageReference Include="JetBrains.Annotations" Version="2020.3.0" PrivateAssets="All" />
+    <PackageReference Include="JetBrains.Annotations" Version="2021.3.0" PrivateAssets="All" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Content.Server.Database\Content.Server.Database.csproj" />
diff --git a/Content.Shared/Content.Shared.csproj b/Content.Shared/Content.Shared.csproj
index c6cf58a98f..caa43c9fdd 100644
--- a/Content.Shared/Content.Shared.csproj
+++ b/Content.Shared/Content.Shared.csproj
@@ -13,7 +13,7 @@
   </PropertyGroup>
   <Import Project="..\RobustToolbox\MSBuild\Robust.DefineConstants.targets" />
   <ItemGroup>
-    <PackageReference Include="JetBrains.Annotations" Version="2020.3.0" PrivateAssets="All" />
+    <PackageReference Include="JetBrains.Annotations" Version="2021.3.0" PrivateAssets="All" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Content.Shared.Database\Content.Shared.Database.csproj" />
diff --git a/Content.Tests/Content.Tests.csproj b/Content.Tests/Content.Tests.csproj
index 463ba9046d..9f7bfe3b4e 100644
--- a/Content.Tests/Content.Tests.csproj
+++ b/Content.Tests/Content.Tests.csproj
@@ -12,10 +12,10 @@
   </PropertyGroup>
   <Import Project="..\RobustToolbox\MSBuild\Robust.DefineConstants.targets" />
   <ItemGroup>
-    <PackageReference Include="NUnit" Version="3.13.1" />
-    <PackageReference Include="NUnit.ConsoleRunner" Version="3.12.0" />
-    <PackageReference Include="NUnit3TestAdapter" Version="3.17.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
+    <PackageReference Include="NUnit" Version="3.13.2" />
+    <PackageReference Include="NUnit.ConsoleRunner" Version="3.15.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.2.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Content.Client\Content.Client.csproj" />