diff --git a/ClosedXML/Properties/AssemblyVersionInfo.cs b/ClosedXML/Properties/AssemblyVersionInfo.cs
index 6db1e31..059d41d 100644
--- a/ClosedXML/Properties/AssemblyVersionInfo.cs
+++ b/ClosedXML/Properties/AssemblyVersionInfo.cs
@@ -7,6 +7,6 @@
 //      Build Number
 //      Revision
 //
-[assembly: AssemblyVersion("0.90.0.0")]
-[assembly: AssemblyFileVersion("0.90.0.0")]
-[assembly: AssemblyInformationalVersion("0.90.0")]
+[assembly: AssemblyVersion("0.91.0.0")]
+[assembly: AssemblyFileVersion("0.91.0.0")]
+[assembly: AssemblyInformationalVersion("0.91.0")]
diff --git a/appveyor.yml b/appveyor.yml
index 0fa8cf1..c9f415d 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -28,7 +28,7 @@
 platform: Any CPU
 
 build:
-  parallel: true                                            # enable MSBuild parallel builds
+  parallel: true               # enable MSBuild parallel builds
   project: ClosedXML.sln       # path to Visual Studio solution or project
   verbosity: minimal