diff --git a/src/Directory.Build.props b/src/Directory.Build.props
index 38f677e..a9b496f 100644
--- a/src/Directory.Build.props
+++ b/src/Directory.Build.props
@@ -49,7 +49,7 @@
     <PackageReference Include="MSTest.TestFramework" Version="3.5.0" />
     <PackageReference Include="coverlet.collector" Version="6.0.2" />
     <PackageReference Include="ReactiveMarbles.NuGet.Helpers" Version="1.1.1" />
-    <PackageReference Include="ICSharpCode.Decompiler" Version="8.2.0.7535" />
+    <PackageReference Include="ICSharpCode.Decompiler" Version="9.1.0.7988" />
   </ItemGroup>
 
   <ItemGroup>