diff --git a/Immutable/Apex.Analyzers.Immutable.Semantics/Apex.Analyzers.Immutable.Semantics.csproj b/Immutable/Apex.Analyzers.Immutable.Semantics/Apex.Analyzers.Immutable.Semantics.csproj
index 0564561..7cc5add 100644
--- a/Immutable/Apex.Analyzers.Immutable.Semantics/Apex.Analyzers.Immutable.Semantics.csproj
+++ b/Immutable/Apex.Analyzers.Immutable.Semantics/Apex.Analyzers.Immutable.Semantics.csproj
@@ -23,7 +23,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.1.0" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.5.0" PrivateAssets="all" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/Immutable/Apex.Analyzers.Immutable.Test/Apex.Analyzers.Immutable.Test.csproj b/Immutable/Apex.Analyzers.Immutable.Test/Apex.Analyzers.Immutable.Test.csproj
index 61d29f4..f36f4f0 100644
--- a/Immutable/Apex.Analyzers.Immutable.Test/Apex.Analyzers.Immutable.Test.csproj
+++ b/Immutable/Apex.Analyzers.Immutable.Test/Apex.Analyzers.Immutable.Test.csproj
@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.1.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.5.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.1.0" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
diff --git a/Immutable/Apex.Analyzers.Immutable/Apex.Analyzers.Immutable.csproj b/Immutable/Apex.Analyzers.Immutable/Apex.Analyzers.Immutable.csproj
index ac704af..d47cb68 100644
--- a/Immutable/Apex.Analyzers.Immutable/Apex.Analyzers.Immutable.csproj
+++ b/Immutable/Apex.Analyzers.Immutable/Apex.Analyzers.Immutable.csproj
@@ -24,7 +24,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.1.0" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.5.0" PrivateAssets="all" />
     <PackageReference Update="NETStandard.Library" PrivateAssets="all" />
   </ItemGroup>