diff --git a/.gitignore b/.gitignore
index 5a5694e..e424a5d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -90,3 +90,4 @@ UpgradeLog*.htm
 # Microsoft Fakes
 FakesAssemblies/
 /src/GettingThingsDone.WebApi/log20180829.txt
+*.DS_Store
diff --git a/src/GettingThingsDone.ApplicationCore/GettingThingsDone.ApplicationCore.csproj b/src/GettingThingsDone.ApplicationCore/GettingThingsDone.ApplicationCore.csproj
index d31ae64..646860b 100644
--- a/src/GettingThingsDone.ApplicationCore/GettingThingsDone.ApplicationCore.csproj
+++ b/src/GettingThingsDone.ApplicationCore/GettingThingsDone.ApplicationCore.csproj
@@ -14,6 +14,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.Primitives" Version="2.1.1" />
+    <PackageReference Include="Microsoft.Extensions.Caching.Abstractions" Version="2.1.2" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/GettingThingsDone.WebApi/log20181003.txt b/src/GettingThingsDone.WebApi/log20181003.txt
new file mode 100644
index 0000000..c1ab004
--- /dev/null
+++ b/src/GettingThingsDone.WebApi/log20181003.txt
@@ -0,0 +1 @@
+2018-10-03 14:26:04.812 +02:00 [WRN] No XML encryptor configured. Key "d1c0002d-d617-48b6-84d7-2da127ae9ec8" may be persisted to storage in unencrypted form.