diff --git a/src/examples/Streams/StreamsExamples/StreamsExamples.csproj b/src/examples/Streams/StreamsExamples/StreamsExamples.csproj
index c693255f28b..eeec7f5b1cf 100644
--- a/src/examples/Streams/StreamsExamples/StreamsExamples.csproj
+++ b/src/examples/Streams/StreamsExamples/StreamsExamples.csproj
@@ -37,9 +37,8 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="System" />
-    <Reference Include="System.Collections.Immutable, Version=1.1.36.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\..\..\packages\System.Collections.Immutable.1.1.36\lib\portable-net45+win8+wp8+wpa81\System.Collections.Immutable.dll</HintPath>
-      <Private>True</Private>
+    <Reference Include="System.Collections.Immutable, Version=1.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+      <HintPath>..\..\..\packages\System.Collections.Immutable.1.3.1\lib\portable-net45+win8+wp8+wpa81\System.Collections.Immutable.dll</HintPath>
     </Reference>
     <Reference Include="System.Core" />
     <Reference Include="System.Xml.Linq" />
diff --git a/src/examples/Streams/StreamsExamples/packages.config b/src/examples/Streams/StreamsExamples/packages.config
index 6aad3a37342..48627e2fcac 100644
--- a/src/examples/Streams/StreamsExamples/packages.config
+++ b/src/examples/Streams/StreamsExamples/packages.config
@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Reactive.Streams" version="1.0.0-RC1" targetFramework="net45" />
+  <package id="System.Collections.Immutable" version="1.3.1" targetFramework="net45" />
 </packages>
\ No newline at end of file