diff --git a/StyleCop.Analyzers/StyleCop.Analyzers/Properties/AssemblyInfo.cs b/StyleCop.Analyzers/StyleCop.Analyzers/Properties/AssemblyInfo.cs
index e652a2e1b..38e0320cf 100644
--- a/StyleCop.Analyzers/StyleCop.Analyzers/Properties/AssemblyInfo.cs
+++ b/StyleCop.Analyzers/StyleCop.Analyzers/Properties/AssemblyInfo.cs
@@ -31,4 +31,4 @@
 // by using the '*' as shown below:
 [assembly: AssemblyVersion("1.0.0.0")]
 [assembly: AssemblyFileVersion("1.0.0.0")]
-[assembly: AssemblyInformationalVersion("1.0.0-dev")]
+[assembly: AssemblyInformationalVersion("1.0.0-alpha005")]
diff --git a/build/version.ps1 b/build/version.ps1
index 18ab0f945..6fcef6de0 100644
--- a/build/version.ps1
+++ b/build/version.ps1
@@ -1 +1 @@
-$Version = "1.0.0-dev"
+$Version = "1.0.0-alpha005"