diff --git a/.github/workflows/ci-dotnet.yaml b/.github/workflows/ci-dotnet.yaml
index d0d5ce62..784f0c7a 100644
--- a/.github/workflows/ci-dotnet.yaml
+++ b/.github/workflows/ci-dotnet.yaml
@@ -13,7 +13,7 @@ jobs:
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: |
-            8.0.x
+            9.0.x
           source-url: https://nuget.pkg.github.com/BluEye-Robotics/index.json
         env:
           NUGET_AUTH_TOKEN: ${{secrets.GITHUB_TOKEN}}
diff --git a/Blueye.Protocol.Protobuf.csproj b/Blueye.Protocol.Protobuf.csproj
index fc1ab64b..8a637594 100644
--- a/Blueye.Protocol.Protobuf.csproj
+++ b/Blueye.Protocol.Protobuf.csproj
@@ -3,7 +3,7 @@
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
-    <LangVersion>12.0</LangVersion>
+    <LangVersion>13.0</LangVersion>
     <PackageId>Blueye.Protocol.Protobuf</PackageId>
     <VersionPrefix>4.6.0</VersionPrefix>
     <Company>Blueye Robotics AS</Company>
@@ -13,8 +13,8 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Google.Protobuf" Version="3.28.3" />
-    <PackageReference Include="Google.Protobuf.Tools" Version="3.28.3">
+    <PackageReference Include="Google.Protobuf" Version="3.29.0" />
+    <PackageReference Include="Google.Protobuf.Tools" Version="3.29.0">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>