diff --git a/Lombiq.ChartJs/Lombiq.ChartJs.csproj b/Lombiq.ChartJs/Lombiq.ChartJs.csproj
index 520beac..179571e 100644
--- a/Lombiq.ChartJs/Lombiq.ChartJs.csproj
+++ b/Lombiq.ChartJs/Lombiq.ChartJs.csproj
@@ -49,7 +49,7 @@
   </PropertyGroup>
 
   <ItemGroup Condition="'$(NuGetBuild)' == 'true'">
-    <PackageReference Include="Lombiq.HelpfulLibraries.OrchardCore" Version="9.0.0" />
+    <PackageReference Include="Lombiq.HelpfulLibraries.OrchardCore" Version="9.1.0" />
     <PackageReference Include="Lombiq.NodeJs.Extensions" Version="1.3.3-alpha.0.osoe-751" />
   </ItemGroup>