diff --git a/src/CancelCop.Analyzer.CodeFixes/CancelCop.Analyzer.CodeFixes.csproj b/src/CancelCop.Analyzer.CodeFixes/CancelCop.Analyzer.CodeFixes.csproj
index 1dde3c0..e1dd3d9 100644
--- a/src/CancelCop.Analyzer.CodeFixes/CancelCop.Analyzer.CodeFixes.csproj
+++ b/src/CancelCop.Analyzer.CodeFixes/CancelCop.Analyzer.CodeFixes.csproj
@@ -15,8 +15,8 @@
 
     <ItemGroup>
         <!-- Compile-time floor; consumers on a newer Roslyn host still work (4.8.0 = VS 17.8). -->
-        <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.8.0" PrivateAssets="all" />
-        <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.11.0" PrivateAssets="all" />
+        <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="5.6.0" PrivateAssets="all" />
+        <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="5.6.0" PrivateAssets="all" />
     </ItemGroup>
 
     <ItemGroup>
diff --git a/src/CancelCop.Analyzer/CancelCop.Analyzer.csproj b/src/CancelCop.Analyzer/CancelCop.Analyzer.csproj
index cab84b4..d00f634 100644
--- a/src/CancelCop.Analyzer/CancelCop.Analyzer.csproj
+++ b/src/CancelCop.Analyzer/CancelCop.Analyzer.csproj
@@ -17,8 +17,8 @@
     <ItemGroup>
         <!-- Compile-time floor; consumers on a newer Roslyn host still work. Keep this low to
              widen compatibility (4.8.0 = VS 17.8 / .NET 8 SDK). -->
-        <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.8.0" PrivateAssets="all" />
-        <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.11.0" PrivateAssets="all" />
+        <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="5.6.0" PrivateAssets="all" />
+        <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="5.6.0" PrivateAssets="all" />
     </ItemGroup>
 
     <!-- Re-enable RS2008 release tracking by feeding the release files to the analyzer. -->
diff --git a/tests/CancelCop.Analyzer.Tests/CancelCop.Analyzer.Tests.csproj b/tests/CancelCop.Analyzer.Tests/CancelCop.Analyzer.Tests.csproj
index c8ac297..f9bb346 100644
--- a/tests/CancelCop.Analyzer.Tests/CancelCop.Analyzer.Tests.csproj
+++ b/tests/CancelCop.Analyzer.Tests/CancelCop.Analyzer.Tests.csproj
@@ -9,8 +9,8 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.14.0" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.14.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="5.6.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="5.6.0" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Analyzer.Testing.XUnit" Version="1.1.2" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.CodeFix.Testing.XUnit" Version="1.1.2" />
     <PackageReference Include="Microsoft.CodeAnalysis.Testing.Verifiers.XUnit" Version="1.1.2" />