diff --git a/.config/dotnet/common.props b/.config/dotnet/common.props
index dce46486..76867ea6 100644
--- a/.config/dotnet/common.props
+++ b/.config/dotnet/common.props
@@ -39,7 +39,7 @@
              Repo_pinned_sdk_ships_exactly_the_bundled_roslyn guards it. -->
         <PackageReference
             Include="Microsoft.CodeAnalysis.CSharp"
-            Version="5.6.0"
+            Version="5.9.0"
             PrivateAssets="all"
         />
         <PackageReference
diff --git a/src/sidecars/SharpLsp.Sidecar.CSharp.Tests/SharpLsp.Sidecar.CSharp.Tests.csproj b/src/sidecars/SharpLsp.Sidecar.CSharp.Tests/SharpLsp.Sidecar.CSharp.Tests.csproj
index dda826b9..1b0731f5 100644
--- a/src/sidecars/SharpLsp.Sidecar.CSharp.Tests/SharpLsp.Sidecar.CSharp.Tests.csproj
+++ b/src/sidecars/SharpLsp.Sidecar.CSharp.Tests/SharpLsp.Sidecar.CSharp.Tests.csproj
@@ -9,7 +9,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="coverlet.collector" Version="10.0.1">
+        <PackageReference Include="coverlet.collector" Version="10.1.0">
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
             <PrivateAssets>all</PrivateAssets>
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
@@ -28,11 +28,11 @@
         />
         <PackageReference
             Include="Microsoft.NET.StringTools"
-            Version="18.7.1"
+            Version="18.10.1"
             ExcludeAssets="runtime"
             PrivateAssets="all"
         />
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.10.0" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.10.1" />
         <PackageReference Include="xunit" Version="2.9.3" />
         <PackageReference Include="xunit.runner.visualstudio" Version="4.0.0" />
     </ItemGroup>
diff --git a/src/sidecars/SharpLsp.Sidecar.CSharp/SharpLsp.Sidecar.CSharp.csproj b/src/sidecars/SharpLsp.Sidecar.CSharp/SharpLsp.Sidecar.CSharp.csproj
index 38446eec..7ca8610a 100644
--- a/src/sidecars/SharpLsp.Sidecar.CSharp/SharpLsp.Sidecar.CSharp.csproj
+++ b/src/sidecars/SharpLsp.Sidecar.CSharp/SharpLsp.Sidecar.CSharp.csproj
@@ -57,7 +57,7 @@
         />
         <PackageReference
             Include="Microsoft.NET.StringTools"
-            Version="17.11.48"
+            Version="18.10.1"
             ExcludeAssets="runtime"
             PrivateAssets="all"
         />
@@ -71,9 +71,9 @@
              sidecar ships Roslyn for real: restore full asset flow.
              Guarded by the "ships its own Roslyn compiler assemblies" e2e test. -->
         <PackageReference Update="Microsoft.CodeAnalysis.CSharp" PrivateAssets="none" />
-        <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Features" Version="5.6.0" />
-        <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="5.6.0" />
-        <PackageReference Include="Microsoft.CodeAnalysis.Workspaces.MSBuild" Version="5.6.0" />
+        <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Features" Version="5.9.0" />
+        <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="5.9.0" />
+        <PackageReference Include="Microsoft.CodeAnalysis.Workspaces.MSBuild" Version="5.9.0" />
         <PackageReference Include="ICSharpCode.Decompiler" Version="11.1.0.9782" />
         <PackageReference Include="MessagePack" Version="3.1.10" />
     </ItemGroup>
diff --git a/src/sidecars/SharpLsp.Sidecar.Common.Tests/SharpLsp.Sidecar.Common.Tests.csproj b/src/sidecars/SharpLsp.Sidecar.Common.Tests/SharpLsp.Sidecar.Common.Tests.csproj
index dcf21531..08a44fa0 100644
--- a/src/sidecars/SharpLsp.Sidecar.Common.Tests/SharpLsp.Sidecar.Common.Tests.csproj
+++ b/src/sidecars/SharpLsp.Sidecar.Common.Tests/SharpLsp.Sidecar.Common.Tests.csproj
@@ -8,7 +8,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="coverlet.collector" Version="10.0.1">
+        <PackageReference Include="coverlet.collector" Version="10.1.0">
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
             <PrivateAssets>all</PrivateAssets>
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
diff --git a/src/sidecars/SharpLsp.Sidecar.Common/SharpLsp.Sidecar.Common.csproj b/src/sidecars/SharpLsp.Sidecar.Common/SharpLsp.Sidecar.Common.csproj
index b383a3ce..9f2fd68f 100644
--- a/src/sidecars/SharpLsp.Sidecar.Common/SharpLsp.Sidecar.Common.csproj
+++ b/src/sidecars/SharpLsp.Sidecar.Common/SharpLsp.Sidecar.Common.csproj
@@ -24,6 +24,7 @@
     <ItemGroup>
         <PackageReference Include="ICSharpCode.Decompiler" Version="11.1.0.9782" />
         <PackageReference Include="MessagePack" Version="3.1.10" />
+        <PackageReference Include="Microsoft.NET.StringTools" Version="18.10.1" />
         <PackageReference Include="Microsoft.VisualStudio.SolutionPersistence" Version="1.0.52" />
         <PackageReference Include="Serilog" Version="4.4.0" />
         <PackageReference Include="Serilog.Sinks.File" Version="7.0.0" />
diff --git a/src/sidecars/SharpLsp.Sidecar.FSharp.Tests/SharpLsp.Sidecar.FSharp.Tests.fsproj b/src/sidecars/SharpLsp.Sidecar.FSharp.Tests/SharpLsp.Sidecar.FSharp.Tests.fsproj
index 1a16ac0a..e0486ffc 100644
--- a/src/sidecars/SharpLsp.Sidecar.FSharp.Tests/SharpLsp.Sidecar.FSharp.Tests.fsproj
+++ b/src/sidecars/SharpLsp.Sidecar.FSharp.Tests/SharpLsp.Sidecar.FSharp.Tests.fsproj
@@ -36,7 +36,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="coverlet.collector" Version="10.0.1">
+    <PackageReference Include="coverlet.collector" Version="10.1.0">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>