diff --git a/ClosedXML/ClosedXML/ClosedXML/Properties/AssemblyInfo.cs b/ClosedXML/ClosedXML/ClosedXML/Properties/AssemblyInfo.cs
index f33b8a7..150cbfb 100644
--- a/ClosedXML/ClosedXML/ClosedXML/Properties/AssemblyInfo.cs
+++ b/ClosedXML/ClosedXML/ClosedXML/Properties/AssemblyInfo.cs
@@ -32,5 +32,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("0.54.0.0")]
-[assembly: AssemblyFileVersion("0.54.0.0")]
+[assembly: AssemblyVersion("0.55.0.0")]
+[assembly: AssemblyFileVersion("0.55.0.0")]
diff --git a/ClosedXML/ClosedXML/ClosedXML_Net3.5/Properties/AssemblyInfo.cs b/ClosedXML/ClosedXML/ClosedXML_Net3.5/Properties/AssemblyInfo.cs
index 53e6d25..db68370 100644
--- a/ClosedXML/ClosedXML/ClosedXML_Net3.5/Properties/AssemblyInfo.cs
+++ b/ClosedXML/ClosedXML/ClosedXML_Net3.5/Properties/AssemblyInfo.cs
@@ -32,5 +32,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("0.54.0.0")]
-[assembly: AssemblyFileVersion("0.54.0.0")]
+[assembly: AssemblyVersion("0.55.0.0")]
+[assembly: AssemblyFileVersion("0.55.0.0")]