diff --git a/MinimalEvents/MinimalEvents.csproj b/MinimalEvents/MinimalEvents.csproj
index f8c46d9..984695e 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="9.0.10" />
+        <PackageReference Include="System.Collections.Immutable" Version="10.0.0" />
     </ItemGroup>
 
     <ItemGroup>
diff --git a/MinimalEventsTests/MinimalEventsTests.csproj b/MinimalEventsTests/MinimalEventsTests.csproj
index 6464150..9d21b67 100644
--- a/MinimalEventsTests/MinimalEventsTests.csproj
+++ b/MinimalEventsTests/MinimalEventsTests.csproj
@@ -10,7 +10,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="TUnit" Version="1.0.39" />
+      <PackageReference Include="TUnit" Version="1.5.6" />
     </ItemGroup>
 
     <ItemGroup>