diff --git a/MaxMind.MinFraud/Properties/AssemblyInfo.cs b/MaxMind.MinFraud/Properties/AssemblyInfo.cs
index 8f0b0121..c052753d 100644
--- a/MaxMind.MinFraud/Properties/AssemblyInfo.cs
+++ b/MaxMind.MinFraud/Properties/AssemblyInfo.cs
@@ -39,4 +39,4 @@
 
 [assembly: AssemblyVersion("0.4.0.0")]
 [assembly: AssemblyFileVersion("0.4.0")]
-[assembly: AssemblyInformationalVersion("0.3.1")]
\ No newline at end of file
+[assembly: AssemblyInformationalVersion("0.4.0-beta1")]
\ No newline at end of file
diff --git a/releasenotes.md b/releasenotes.md
index 53082d98..e271dac9 100644
--- a/releasenotes.md
+++ b/releasenotes.md
@@ -1,8 +1,8 @@
 Release Notes
 =============
 
-0.4.0 (2016-01-28)
-------------------
+0.4.0-beta1 (2016-01-28)
+------------------------
 
 * Added support for new minFraud Insights outputs. These are:
     * `/credit_card/brand`