diff --git a/samples/Tracker.WebService.EntityFrameworkCore/Tracker.WebService.EntityFrameworkCore.csproj b/samples/Tracker.WebService.EntityFrameworkCore/Tracker.WebService.EntityFrameworkCore.csproj
index f30647b..bc9fcef 100644
--- a/samples/Tracker.WebService.EntityFrameworkCore/Tracker.WebService.EntityFrameworkCore.csproj
+++ b/samples/Tracker.WebService.EntityFrameworkCore/Tracker.WebService.EntityFrameworkCore.csproj
@@ -17,7 +17,7 @@
     <PackageReference Include="FluentValidation.AspNetCore" Version="11.3.0" />
     <PackageReference Include="Hangfire.AspNetCore" Version="1.8.15" />
     <PackageReference Include="Hangfire.SqlServer" Version="1.8.15" />
-    <PackageReference Include="Injectio" Version="3.3.0" PrivateAssets="all" />
+    <PackageReference Include="Injectio" Version="4.0.0" PrivateAssets="all" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="9.0.0" />
     <PackageReference Include="Serilog.AspNetCore" Version="8.0.3" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="7.0.0" />
diff --git a/samples/Tracker.WebService.MongoDB/Tracker.WebService.MongoDB.csproj b/samples/Tracker.WebService.MongoDB/Tracker.WebService.MongoDB.csproj
index 792db67..6d41633 100644
--- a/samples/Tracker.WebService.MongoDB/Tracker.WebService.MongoDB.csproj
+++ b/samples/Tracker.WebService.MongoDB/Tracker.WebService.MongoDB.csproj
@@ -12,7 +12,7 @@
 
   <ItemGroup>
     <PackageReference Include="FluentValidation.AspNetCore" Version="11.3.0" />
-    <PackageReference Include="Injectio" Version="3.3.0" />
+    <PackageReference Include="Injectio" Version="4.0.0" />
     <PackageReference Include="Serilog.AspNetCore" Version="8.0.3" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="7.0.0" />
   </ItemGroup>
diff --git a/test/Directory.Build.props b/test/Directory.Build.props
index e240abf..0d284d9 100644
--- a/test/Directory.Build.props
+++ b/test/Directory.Build.props
@@ -30,7 +30,7 @@
   <ItemGroup>
     <PackageReference Include="Bogus" Version="35.6.1" />
     <PackageReference Include="FluentAssertions" Version="6.12.2" />
-    <PackageReference Include="Injectio" Version="3.3.0" PrivateAssets="All" />
+    <PackageReference Include="Injectio" Version="4.0.0" PrivateAssets="All" />
     <PackageReference Include="XUnit.Hosting" Version="2.0.0" />
   </ItemGroup>