diff --git a/Lombiq.BaseTheme.Tests.UI/Lombiq.BaseTheme.Tests.UI.csproj b/Lombiq.BaseTheme.Tests.UI/Lombiq.BaseTheme.Tests.UI.csproj
index dc1d739..0555f83 100644
--- a/Lombiq.BaseTheme.Tests.UI/Lombiq.BaseTheme.Tests.UI.csproj
+++ b/Lombiq.BaseTheme.Tests.UI/Lombiq.BaseTheme.Tests.UI.csproj
@@ -25,7 +25,7 @@
   </ItemGroup>
 
   <ItemGroup Condition="'$(NuGetBuild)' == 'true'">
-    <PackageReference Include="Lombiq.Tests.UI" Version="8.2.1-alpha.22.osoe-751" />
+    <PackageReference Include="Lombiq.Tests.UI" Version="9.0.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/Lombiq.BaseTheme/Lombiq.BaseTheme.csproj b/Lombiq.BaseTheme/Lombiq.BaseTheme.csproj
index 9324e0b..428c169 100644
--- a/Lombiq.BaseTheme/Lombiq.BaseTheme.csproj
+++ b/Lombiq.BaseTheme/Lombiq.BaseTheme.csproj
@@ -47,8 +47,8 @@
   </ItemGroup>
 
   <ItemGroup Condition="'$(NuGetBuild)' == 'true'">
-    <PackageReference Include="Lombiq.HelpfulLibraries" Version="8.1.1-alpha.7.osoe-751" />
-    <PackageReference Include="Lombiq.HelpfulExtensions" Version="7.0.3-alpha.4.osoe-751" />
+    <PackageReference Include="Lombiq.HelpfulLibraries" Version="9.0.0" />
+    <PackageReference Include="Lombiq.HelpfulExtensions" Version="8.0.0" />
     <PackageReference Include="Lombiq.NodeJs.Extensions" Version="1.3.3-alpha.0.osoe-751" />
 
     <Content Include="Assets/Styles/**/*.*">