diff --git a/Sample/SextantSample/SextantSample.csproj b/Sample/SextantSample/SextantSample.csproj
index 074faa76..139daaa1 100644
--- a/Sample/SextantSample/SextantSample.csproj
+++ b/Sample/SextantSample/SextantSample.csproj
@@ -4,7 +4,7 @@
         <TargetFramework>netstandard2.0</TargetFramework>
     </PropertyGroup>
     <ItemGroup>
-        <PackageReference Include="System.Collections.Immutable" Version="6.0.0" />
+        <PackageReference Include="System.Collections.Immutable" Version="8.0.0" />
         <PackageReference Include="Pharmacist.MsBuild" Version="2.*" PrivateAssets="all" />
         <PackageReference Include="Pharmacist.Common" Version="2.*" />
     </ItemGroup>
diff --git a/src/Sextant.XamForms/Sextant.XamForms.csproj b/src/Sextant.XamForms/Sextant.XamForms.csproj
index 0ac80d9a..ae591e02 100644
--- a/src/Sextant.XamForms/Sextant.XamForms.csproj
+++ b/src/Sextant.XamForms/Sextant.XamForms.csproj
@@ -11,7 +11,7 @@
 
   <ItemGroup>
     <PackageReference Include="ReactiveUI.XamForms" Version="17.*" />
-    <PackageReference Include="System.Collections.Immutable" Version="6.0.0" />
+    <PackageReference Include="System.Collections.Immutable" Version="8.0.0" />
   </ItemGroup>
 
   <ItemGroup>