diff --git a/src/Sdk.UnitTests/Sdk.UnitTests.csproj b/src/Sdk.UnitTests/Sdk.UnitTests.csproj
index b0fa900..b131056 100644
--- a/src/Sdk.UnitTests/Sdk.UnitTests.csproj
+++ b/src/Sdk.UnitTests/Sdk.UnitTests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
-        <TargetFramework>net6.0</TargetFramework>
+        <TargetFramework>net8.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
         <AssemblyName>Cerbos.Sdk.UnitTests</AssemblyName>
@@ -8,11 +8,11 @@
 
     <ItemGroup>
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
-        <PackageReference Include="NUnit" Version="4.2.2" />
+        <PackageReference Include="NUnit" Version="4.3.2" />
         <PackageReference Include="NUnit3TestAdapter" Version="4.6.0" />
-        <PackageReference Include="NUnit.Analyzers" Version="4.4.0" />
-        <PackageReference Include="coverlet.collector" Version="6.0.2" />
-        <PackageReference Include="Testcontainers" Version="4.0.0" />
+        <PackageReference Include="NUnit.Analyzers" Version="4.5.0" />
+        <PackageReference Include="coverlet.collector" Version="6.0.3" />
+        <PackageReference Include="Testcontainers" Version="4.1.0" />
     </ItemGroup>
 
     <ItemGroup>
diff --git a/src/Sdk/sdk.csproj b/src/Sdk/sdk.csproj
index 51685d6..72476e8 100644
--- a/src/Sdk/sdk.csproj
+++ b/src/Sdk/sdk.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
         <Version>1.4.0</Version>
-        <TargetFrameworks>netstandard2.0;netstandard2.1;net5.0;net6.0</TargetFrameworks>
+        <TargetFrameworks>netstandard2.0;netstandard2.1;net8.0;</TargetFrameworks>
         <AssemblyName>Cerbos.Sdk</AssemblyName>
         <PackageId>Cerbos.Sdk</PackageId>
         <Authors>Cerbos</Authors>
@@ -16,7 +16,7 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="Google.Protobuf" Version="3.29.1" />
+        <PackageReference Include="Google.Protobuf" Version="3.29.2" />
         <PackageReference Include="Grpc" Version="2.46.6" />
         <PackageReference Include="Grpc.Net.Client" Version="2.67.0" />
     </ItemGroup>