diff --git a/Lombiq.HelpfulLibraries.LinqToDb/Lombiq.HelpfulLibraries.LinqToDb.csproj b/Lombiq.HelpfulLibraries.LinqToDb/Lombiq.HelpfulLibraries.LinqToDb.csproj
index 8b193565..216b1a36 100644
--- a/Lombiq.HelpfulLibraries.LinqToDb/Lombiq.HelpfulLibraries.LinqToDb.csproj
+++ b/Lombiq.HelpfulLibraries.LinqToDb/Lombiq.HelpfulLibraries.LinqToDb.csproj
@@ -23,7 +23,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="linq2db" Version="5.4.0" />
+    <PackageReference Include="linq2db" Version="5.4.1" />
     <PackageReference Include="OrchardCore.Data.YesSql" Version="2.0.0" />
   </ItemGroup>
 </Project>
diff --git a/Lombiq.HelpfulLibraries.OrchardCore/Lombiq.HelpfulLibraries.OrchardCore.csproj b/Lombiq.HelpfulLibraries.OrchardCore/Lombiq.HelpfulLibraries.OrchardCore.csproj
index a0c8e3dd..6217b7ef 100644
--- a/Lombiq.HelpfulLibraries.OrchardCore/Lombiq.HelpfulLibraries.OrchardCore.csproj
+++ b/Lombiq.HelpfulLibraries.OrchardCore/Lombiq.HelpfulLibraries.OrchardCore.csproj
@@ -43,6 +43,9 @@
     <PackageReference Include="OrchardCore.Title" Version="2.0.0" />
     <PackageReference Include="OrchardCore.Users.Core" Version="2.0.0" />
     <PackageReference Include="OrchardCore.Workflows.Abstractions" Version="2.0.0" />
+    <!-- This is only needed until the next Orchard Core upgrade because 8.0.4, referenced by OC 2.0.0, has
+    vulnerabilities. -->
+    <PackageReference Include="System.Text.Json" Version="8.0.5" />
   </ItemGroup>
 
   <!-- Necessary so tag helpers will work in the projects depending on this. -->
diff --git a/Lombiq.HelpfulLibraries.Refit/Lombiq.HelpfulLibraries.Refit.csproj b/Lombiq.HelpfulLibraries.Refit/Lombiq.HelpfulLibraries.Refit.csproj
index bc029657..6dcf9328 100644
--- a/Lombiq.HelpfulLibraries.Refit/Lombiq.HelpfulLibraries.Refit.csproj
+++ b/Lombiq.HelpfulLibraries.Refit/Lombiq.HelpfulLibraries.Refit.csproj
@@ -23,8 +23,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.Http" Version="8.0.0" />
-    <PackageReference Include="Refit.HttpClientFactory" Version="7.1.2" />
+    <PackageReference Include="Refit.HttpClientFactory" Version="8.0.0" />
   </ItemGroup>
 
 </Project>