diff --git a/NuGetTest/src/Modules/Lombiq.OSOCE.NuGet.TestModule/Lombiq.OSOCE.NuGet.TestModule.csproj b/NuGetTest/src/Modules/Lombiq.OSOCE.NuGet.TestModule/Lombiq.OSOCE.NuGet.TestModule.csproj
index 1afdd5935..b9dd937ae 100644
--- a/NuGetTest/src/Modules/Lombiq.OSOCE.NuGet.TestModule/Lombiq.OSOCE.NuGet.TestModule.csproj
+++ b/NuGetTest/src/Modules/Lombiq.OSOCE.NuGet.TestModule/Lombiq.OSOCE.NuGet.TestModule.csproj
@@ -16,7 +16,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Lombiq.HelpfulLibraries" Version="9.1.0" />
+    <PackageReference Include="Lombiq.HelpfulLibraries" Version="9.1.1-alpha.1.osoe-801" />
     <PackageReference Include="OrchardCore.Module.Targets" Version="1.8.2" />
     <PackageReference Include="OrchardCore.ContentManagement" Version="1.8.2" />
     <PackageReference Include="OrchardCore.ContentTypes.Abstractions" Version="1.8.2" />
diff --git a/NuGetTest/test/Lombiq.OSOCE.NuGet.Tests/Lombiq.OSOCE.NuGet.Tests.csproj b/NuGetTest/test/Lombiq.OSOCE.NuGet.Tests/Lombiq.OSOCE.NuGet.Tests.csproj
index 6a2930b53..1201e4c6a 100644
--- a/NuGetTest/test/Lombiq.OSOCE.NuGet.Tests/Lombiq.OSOCE.NuGet.Tests.csproj
+++ b/NuGetTest/test/Lombiq.OSOCE.NuGet.Tests/Lombiq.OSOCE.NuGet.Tests.csproj
@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Lombiq.HelpfulLibraries" Version="9.1.0" />
+    <PackageReference Include="Lombiq.HelpfulLibraries" Version="9.1.1-alpha.1.osoe-801" />
     <PackageReference Include="Lombiq.Tests" Version="3.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.1">
diff --git a/src/Libraries/Lombiq.HelpfulLibraries b/src/Libraries/Lombiq.HelpfulLibraries
index 756c82cf0..749343ba6 160000
--- a/src/Libraries/Lombiq.HelpfulLibraries
+++ b/src/Libraries/Lombiq.HelpfulLibraries
@@ -1 +1 @@
-Subproject commit 756c82cf0414ba67ab79fee07684f8a437780eee
+Subproject commit 749343ba6e7d6f74819b3b91dc39c9b5da8b7192