diff --git a/Subsurface/Properties/AssemblyInfo.cs b/Subsurface/Properties/AssemblyInfo.cs
index 25e0a175f..d7c0f8b6f 100644
--- a/Subsurface/Properties/AssemblyInfo.cs
+++ b/Subsurface/Properties/AssemblyInfo.cs
@@ -31,5 +31,5 @@ using System.Runtime.InteropServices;
 // 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("0.5.1.0")]
-[assembly: AssemblyFileVersion("0.5.1.0")]
+[assembly: AssemblyVersion("0.5.1.1")]
+[assembly: AssemblyFileVersion("0.5.1.1")]
diff --git a/Subsurface/changelog.txt b/Subsurface/changelog.txt
index 61a788cf6..261fa063d 100644
--- a/Subsurface/changelog.txt
+++ b/Subsurface/changelog.txt
@@ -1,3 +1,10 @@
+---------------------------------------------------------------------------------------------------------
+v0.5.1.1
+---------------------------------------------------------------------------------------------------------
+
+- fixed non-password protected servers being impossible to join to
+- some more security checks
+
 ---------------------------------------------------------------------------------------------------------
 v0.5.1.0
 ---------------------------------------------------------------------------------------------------------