diff --git a/src/ReactiveMarbles.ObservableEvents.Tests/ReactiveMarbles.ObservableEvents.Tests.csproj b/src/ReactiveMarbles.ObservableEvents.Tests/ReactiveMarbles.ObservableEvents.Tests.csproj
index 2d01ef2..c033e95 100644
--- a/src/ReactiveMarbles.ObservableEvents.Tests/ReactiveMarbles.ObservableEvents.Tests.csproj
+++ b/src/ReactiveMarbles.ObservableEvents.Tests/ReactiveMarbles.ObservableEvents.Tests.csproj
@@ -21,7 +21,7 @@
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     <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.4" PrivateAssets="all" />
-    <PackageReference Include="ICSharpCode.Decompiler" Version="7.2.1.6856" />
+    <PackageReference Include="ICSharpCode.Decompiler" Version="8.1.0.7455" />
     <PackageReference Include="ReactiveMarbles.NuGet.Helpers" Version="1.0.33" />
   </ItemGroup>