diff --git a/Directory.Build.props b/Directory.Build.props
index 2829ea8..e110309 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -36,7 +36,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Meziantou.Analyzer" Version="3.0.98">
+    <PackageReference Include="Meziantou.Analyzer" Version="3.0.138">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
diff --git a/src/Reflectify/TypeMetaDataExtensions.cs b/src/Reflectify/TypeMetaDataExtensions.cs
index 4c5d4f2..9057bdc 100644
--- a/src/Reflectify/TypeMetaDataExtensions.cs
+++ b/src/Reflectify/TypeMetaDataExtensions.cs
@@ -250,7 +250,7 @@ public static bool IsTuple(this Type type)
     /// </summary>
     public static bool IsAnonymous(this Type type)
     {
-        if (!type.FullName!.Contains("AnonymousType"))
+        if (type.FullName!.IndexOf("AnonymousType", StringComparison.Ordinal) < 0)
         {
             return false;
         }