diff --git a/Nuclex.Support (net-4.0).csproj b/Nuclex.Support (net-4.0).csproj
index e2b6e6f..292ab3f 100644
--- a/Nuclex.Support (net-4.0).csproj
+++ b/Nuclex.Support (net-4.0).csproj
@@ -76,12 +76,23 @@
Deque.cs
+
ItemEventArgs.cs
+
+
+ MultiDictionary.cs
+
+
+ MultiDictionary.cs
+
+
+ MultiDictionary.cs
+
ObservableCollection.cs
@@ -377,6 +388,9 @@
Foundation.snk
+
+
+