diff --git a/src/AddBook/AddBook.csproj b/src/AddBook/AddBook.csproj
index 598d36f..faf3e74 100644
--- a/src/AddBook/AddBook.csproj
+++ b/src/AddBook/AddBook.csproj
@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="AngleSharp" Version="1.3.0" />
+    <PackageReference Include="AngleSharp" Version="1.3.1" />
     <PackageReference Include="Microsoft.TypeScript.MSBuild" Version="5.9.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>