diff --git a/DiscImageChef.CommonTypes.csproj b/DiscImageChef.CommonTypes.csproj
index 4896d5f..034b2e9 100644
--- a/DiscImageChef.CommonTypes.csproj
+++ b/DiscImageChef.CommonTypes.csproj
@@ -9,7 +9,7 @@
     <OutputType>Library</OutputType>
     <RootNamespace>DiscImageChef.CommonTypes</RootNamespace>
     <AssemblyName>DiscImageChef.CommonTypes</AssemblyName>
-    <ReleaseVersion>4.0.0.0</ReleaseVersion>
+    <ReleaseVersion>4.0.99.0</ReleaseVersion>
     <SynchReleaseVersion>false</SynchReleaseVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
diff --git a/Properties/AssemblyInfo.cs b/Properties/AssemblyInfo.cs
index 6f892a5..5e13c7b 100644
--- a/Properties/AssemblyInfo.cs
+++ b/Properties/AssemblyInfo.cs
@@ -48,7 +48,7 @@ using System.Reflection;
 // The form "{Major}.{Minor}.*" will automatically update the build and revision,
 // and "{Major}.{Minor}.{Build}.*" will update just the revision.
 
-[assembly: AssemblyVersion("4.0.0.0")]
+[assembly: AssemblyVersion("4.0.99.0")]
 
 // The following attributes are used to specify the signing key for the assembly,
 // if desired. See the Mono documentation for more information about signing.