diff --git a/MinimalEvents/MinimalEvents.csproj b/MinimalEvents/MinimalEvents.csproj
index 2d281d9..05fe61c 100644
--- a/MinimalEvents/MinimalEvents.csproj
+++ b/MinimalEvents/MinimalEvents.csproj
@@ -33,7 +33,7 @@
     </ItemGroup>
 
     <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.1'">
-        <PackageReference Include="System.Collections.Immutable" Version="9.0.6" />
+        <PackageReference Include="System.Collections.Immutable" Version="9.0.9" />
     </ItemGroup>
 
     <ItemGroup>
diff --git a/MinimalEventsTests/MinimalEventsTests.csproj b/MinimalEventsTests/MinimalEventsTests.csproj
index 91ed3d8..908a420 100644
--- a/MinimalEventsTests/MinimalEventsTests.csproj
+++ b/MinimalEventsTests/MinimalEventsTests.csproj
@@ -10,7 +10,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="TUnit" Version="0.25.21" />
+      <PackageReference Include="TUnit" Version="0.57.65" />
     </ItemGroup>
 
     <ItemGroup>