diff --git a/NuGet/ReactiveUI-Core/ReactiveUI-Core.nuspec b/NuGet/ReactiveUI-Core/ReactiveUI-Core.nuspec
index 3fecb3690c..af991849ee 100644
--- a/NuGet/ReactiveUI-Core/ReactiveUI-Core.nuspec
+++ b/NuGet/ReactiveUI-Core/ReactiveUI-Core.nuspec
@@ -2,7 +2,7 @@
 <package xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
 	<metadata xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd">
 		<id>reactiveui-core</id>
-		<version>4.2.0</version>
+		<version>4.2.1</version>
 		<description>An MVVM library for .NET that is deeply integrated with the Reactive Extensions</description>
 		<authors>Paul Betts</authors>
 		<projectUrl>http://www.reactiveui.net</projectUrl>
diff --git a/NuGet/ReactiveUI-NLog/ReactiveUI-NLog.nuspec b/NuGet/ReactiveUI-NLog/ReactiveUI-NLog.nuspec
index f38d2abe12..d91326c554 100644
--- a/NuGet/ReactiveUI-NLog/ReactiveUI-NLog.nuspec
+++ b/NuGet/ReactiveUI-NLog/ReactiveUI-NLog.nuspec
@@ -2,7 +2,7 @@
 <package xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
 	<metadata xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd">
 		<id>reactiveui-nlog</id>
-		<version>4.2.0</version>
+		<version>4.2.1</version>
 		<description>An adapter to initialize NLog as the logger for ReactiveUI.</description>
 		<authors>Paul Betts</authors>
 		<projectUrl>http://www.reactiveui.net</projectUrl>
@@ -11,7 +11,7 @@
 		<requireLicenseAcceptance>false</requireLicenseAcceptance>
 
 		<dependencies>
-			<dependency id="reactiveui-core" version="[4.2.0]" />
+			<dependency id="reactiveui-core" version="[4.2.1]" />
 			<dependency id="NLog" version="2.0.0.2000" />
 		</dependencies>
 	</metadata>
diff --git a/NuGet/ReactiveUI-Testing/ReactiveUI-Testing.nuspec b/NuGet/ReactiveUI-Testing/ReactiveUI-Testing.nuspec
index d0306b6248..697f94d0bc 100644
--- a/NuGet/ReactiveUI-Testing/ReactiveUI-Testing.nuspec
+++ b/NuGet/ReactiveUI-Testing/ReactiveUI-Testing.nuspec
@@ -2,7 +2,7 @@
 <package xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
 	<metadata xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd">
 		<id>reactiveui-testing</id>
-		<version>4.2.0</version>
+		<version>4.2.1</version>
 		<description>A library to aid in writing unit tests for ReactiveUI projects</description>
 		<authors>Paul Betts</authors>
 		<projectUrl>http://www.reactiveui.net</projectUrl>
@@ -11,7 +11,7 @@
 		<requireLicenseAcceptance>false</requireLicenseAcceptance>
 
 		<dependencies>
-			<dependency id="reactiveui-core" version="[4.2.0]" />
+			<dependency id="reactiveui-core" version="[4.2.1]" />
 			<dependency id="Rx-Testing" version="[2.0.21114]" />
 		</dependencies>
 	</metadata>
diff --git a/NuGet/ReactiveUI-WinRT/ReactiveUI-WinRT.nuspec b/NuGet/ReactiveUI-WinRT/ReactiveUI-WinRT.nuspec
index bec2eeaa97..e9a427fa05 100644
--- a/NuGet/ReactiveUI-WinRT/ReactiveUI-WinRT.nuspec
+++ b/NuGet/ReactiveUI-WinRT/ReactiveUI-WinRT.nuspec
@@ -2,7 +2,7 @@
 <package xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
 	<metadata xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd">
 		<id>reactiveui-winrt</id>
-		<version>4.2.0</version>
+		<version>4.2.1</version>
 		<description>An MVVM library for WPF and Silverlight that is deeply integrated with the Reactive Extensions</description>
 		<authors>Paul Betts</authors>
 		<projectUrl>http://www.reactiveui.net</projectUrl>
@@ -11,8 +11,8 @@
 		<requireLicenseAcceptance>false</requireLicenseAcceptance>
 
 		<dependencies>
-			<dependency id="reactiveui-core" version="[4.2.0]" />
-			<dependency id="reactiveui-xaml" version="[4.2.0]" />
+			<dependency id="reactiveui-core" version="[4.2.1]" />
+			<dependency id="reactiveui-xaml" version="[4.2.1]" />
 			<dependency id="Rx-WinRT" version="[2.0.21114]" />
 		</dependencies>
 	</metadata>
diff --git a/NuGet/ReactiveUI-Xaml/ReactiveUI-Xaml.nuspec b/NuGet/ReactiveUI-Xaml/ReactiveUI-Xaml.nuspec
index 4d2ee18da8..02e58cef1c 100644
--- a/NuGet/ReactiveUI-Xaml/ReactiveUI-Xaml.nuspec
+++ b/NuGet/ReactiveUI-Xaml/ReactiveUI-Xaml.nuspec
@@ -2,7 +2,7 @@
 <package xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
 	<metadata xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd">
 		<id>reactiveui-xaml</id>
-		<version>4.2.0</version>
+		<version>4.2.1</version>
 		<description>WPF and Silverlight specific extensions to ReactiveUI</description>
 		<authors>Paul Betts</authors>
 		<projectUrl>http://www.reactiveui.net</projectUrl>
@@ -11,7 +11,7 @@
 		<requireLicenseAcceptance>false</requireLicenseAcceptance>
 
 		<dependencies>
-			<dependency id="reactiveui-core" version="[4.2.0]" />
+			<dependency id="reactiveui-core" version="[4.2.1]" />
 			<dependency id="Rx-Xaml" version="[2.0.21114]" />
 		</dependencies>
 	</metadata>
diff --git a/NuGet/ReactiveUI/ReactiveUI.nuspec b/NuGet/ReactiveUI/ReactiveUI.nuspec
index f0637ab833..564d6f5a4d 100644
--- a/NuGet/ReactiveUI/ReactiveUI.nuspec
+++ b/NuGet/ReactiveUI/ReactiveUI.nuspec
@@ -2,7 +2,7 @@
 <package xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
 	<metadata xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd">
 		<id>reactiveui</id>
-		<version>4.2.0</version>
+		<version>4.2.1</version>
 		<description>An MVVM library for WPF and Silverlight that is deeply integrated with the Reactive Extensions</description>
 		<authors>Paul Betts</authors>
 		<projectUrl>http://www.reactiveui.net</projectUrl>
@@ -11,10 +11,10 @@
 		<requireLicenseAcceptance>false</requireLicenseAcceptance>
 
 		<dependencies>
-			<dependency id="reactiveui-core" version="[4.2.0]" />
-			<dependency id="reactiveui-nlog" version="[4.2.0]" />
-			<dependency id="reactiveui-xaml" version="[4.2.0]" />
-			<dependency id="reactiveui-testing" version="[4.2.0]" />
+			<dependency id="reactiveui-core" version="[4.2.1]" />
+			<dependency id="reactiveui-nlog" version="[4.2.1]" />
+			<dependency id="reactiveui-xaml" version="[4.2.1]" />
+			<dependency id="reactiveui-testing" version="[4.2.1]" />
 		</dependencies>
 	</metadata>
 </package>
diff --git a/ReactiveUI.Blend/Properties/AssemblyInfo.cs b/ReactiveUI.Blend/Properties/AssemblyInfo.cs
index 4bf4b4160c..6d667174a3 100644
--- a/ReactiveUI.Blend/Properties/AssemblyInfo.cs
+++ b/ReactiveUI.Blend/Properties/AssemblyInfo.cs
@@ -3,4 +3,4 @@
 
 [assembly: AssemblyDescription("An MVVM framework that integrates the Reactive Extensions")]
 [assembly: AssemblyProduct("ReactiveUI for Expression Blend")]
-[assembly: AssemblyVersion("4.2.0")]
+[assembly: AssemblyVersion("4.2.1")]
diff --git a/ReactiveUI.Gtk/Properties/AssemblyInfo.cs b/ReactiveUI.Gtk/Properties/AssemblyInfo.cs
index 3130e5d870..1eb608e758 100644
--- a/ReactiveUI.Gtk/Properties/AssemblyInfo.cs
+++ b/ReactiveUI.Gtk/Properties/AssemblyInfo.cs
@@ -8,4 +8,4 @@
 [assembly: AssemblyDescription("Gtk# support for ReactiveUI")]
 [assembly: AssemblyProduct("ReactiveUI.Gtk")]
 
-[assembly: AssemblyVersion("4.2.0")]
+[assembly: AssemblyVersion("4.2.1")]
diff --git a/ReactiveUI.Routing/Properties/AssemblyInfo.cs b/ReactiveUI.Routing/Properties/AssemblyInfo.cs
index b24dfd94f9..b4baf4ff52 100644
--- a/ReactiveUI.Routing/Properties/AssemblyInfo.cs
+++ b/ReactiveUI.Routing/Properties/AssemblyInfo.cs
@@ -9,6 +9,6 @@
 [assembly: AssemblyDescription("A ViewModel-based Routing framework for RxUI")]
 [assembly: AssemblyProduct("ReactiveUI.Routing")]
 
-[assembly: AssemblyVersion("4.2.0")]
+[assembly: AssemblyVersion("4.2.1")]
 [assembly: InternalsVisibleTo("ReactiveUI.Routing.Tests")]
 [assembly: InternalsVisibleTo("ReactiveUI.Routing.Explorables")]
diff --git a/ReactiveUI.Serialization.Esent/Properties/AssemblyInfo.cs b/ReactiveUI.Serialization.Esent/Properties/AssemblyInfo.cs
index 73810f14af..ab99d70c18 100644
--- a/ReactiveUI.Serialization.Esent/Properties/AssemblyInfo.cs
+++ b/ReactiveUI.Serialization.Esent/Properties/AssemblyInfo.cs
@@ -8,4 +8,4 @@
 [assembly: AssemblyTitle("ReactiveUI.Serialization.Esent")]
 [assembly: AssemblyDescription("ESENT-based storage provider for ReactiveUI.Serialization")]
 [assembly: AssemblyProduct("ReactiveUI.Serialization")]
-[assembly: AssemblyVersion("4.2.0")]
+[assembly: AssemblyVersion("4.2.1")]
diff --git a/ReactiveUI.Serialization/Properties/AssemblyInfo.cs b/ReactiveUI.Serialization/Properties/AssemblyInfo.cs
index e6ff7a16f9..31211c89e5 100644
--- a/ReactiveUI.Serialization/Properties/AssemblyInfo.cs
+++ b/ReactiveUI.Serialization/Properties/AssemblyInfo.cs
@@ -9,6 +9,6 @@
 [assembly: AssemblyDescription("A key-value based serialization library for ReactiveUI")]
 [assembly: AssemblyProduct("ReactiveUI.Serialization")]
 
-[assembly: AssemblyVersion("4.2.0")]
+[assembly: AssemblyVersion("4.2.1")]
 [assembly: InternalsVisibleTo("ReactiveUI.Serialization.Tests")]
 [assembly: InternalsVisibleTo("ReactiveUI.Serialization.Explorables")]
diff --git a/ReactiveUI.Testing/Properties/AssemblyInfo.cs b/ReactiveUI.Testing/Properties/AssemblyInfo.cs
index 27dd799853..c2915a1783 100644
--- a/ReactiveUI.Testing/Properties/AssemblyInfo.cs
+++ b/ReactiveUI.Testing/Properties/AssemblyInfo.cs
@@ -4,4 +4,4 @@
 
 [assembly: AssemblyDescription("Classes that aid in testing ReactiveUI projects")]
 [assembly: AssemblyProduct("ReactiveUI.Testing")]
-[assembly: AssemblyVersion("4.2.0")]
+[assembly: AssemblyVersion("4.2.1")]
diff --git a/ReactiveUI.Xaml/Properties/AssemblyInfo.cs b/ReactiveUI.Xaml/Properties/AssemblyInfo.cs
index ab90604110..5e80bae5d9 100644
--- a/ReactiveUI.Xaml/Properties/AssemblyInfo.cs
+++ b/ReactiveUI.Xaml/Properties/AssemblyInfo.cs
@@ -5,7 +5,7 @@
 
 [assembly: AssemblyDescription("An MVVM framework that integrates the Reactive Extensions")]
 [assembly: AssemblyProduct("ReactiveUI.Xaml")]
-[assembly: AssemblyVersion("4.2.0")]
+[assembly: AssemblyVersion("4.2.1")]
 
 #if !(WINRT || SILVERLIGHT || MONO)
 [assembly: ThemeInfo(
diff --git a/ReactiveUI/Properties/AssemblyInfo.cs b/ReactiveUI/Properties/AssemblyInfo.cs
index bc4343cf1d..96f862c142 100644
--- a/ReactiveUI/Properties/AssemblyInfo.cs
+++ b/ReactiveUI/Properties/AssemblyInfo.cs
@@ -4,7 +4,7 @@
 
 [assembly: AssemblyDescription("An MVVM framework that integrates the Reactive Extensions")]
 [assembly: AssemblyProduct("ReactiveUI")]
-[assembly: AssemblyVersion("4.2.0")]
+[assembly: AssemblyVersion("4.2.1")]
 
 [assembly: InternalsVisibleTo("ReactiveUI.Explorables")]
 [assembly: InternalsVisibleTo("ReactiveUI.Xaml")]