diff --git a/docs/pcbgcode.tex b/docs/pcbgcode.tex
index 3926d94..3960e02 100644
--- a/docs/pcbgcode.tex
+++ b/docs/pcbgcode.tex
@@ -58,7 +58,7 @@
 %----------------------------------------------------------------------------------------
 
 \title{\vspace{-15mm}\fontsize{24pt}{10pt}\selectfont\textbf{The PCB-GCODE User's Manual}\\[1em]
-\fontsize{18pt}{10pt}\textsc{Version 3.6.5}\\[1em]
+\fontsize{18pt}{10pt}\textsc{Version 3.6.6}\\[1em]
 }
 
 \author{
diff --git a/pcb-gcode-setup.ulp b/pcb-gcode-setup.ulp
index 63e8368..5454533 100644
--- a/pcb-gcode-setup.ulp
+++ b/pcb-gcode-setup.ulp
@@ -507,7 +507,7 @@ int Result = dlgDialog("pcb-gcode Setup") {
 			"<td><h6><center>Copyright 2003-2022 by"
 			" John Johnson Software, LLC.</center>"
 			"<center>All Rights Reserved</center>"
-			"<center>Version <em>3.6.5</em></center></h6></td>"
+			"<center>Version <em>3.6.6</em></center></h6></td>"
 			"</tr>"
 			"<tr><td></td><td><center>You have EAGLE version " + m_eagle_compatibility + "</center></td></tr>"
 			"</table>");
diff --git a/pcb-gcode.ulp b/pcb-gcode.ulp
index e29428d..4f31986 100644
--- a/pcb-gcode.ulp
+++ b/pcb-gcode.ulp
@@ -21,7 +21,7 @@
 #include "source/filename_subs.h"
 
 #usage "<center><b>pcb-gcode&trade; Gcode Generation Utility</b><br>"
-			 " Version 3.6.5<p>"
+			 " Version 3.6.6<p>"
 			 "Copyright&copy; 2003 - 2022 by John Johnson Software, LLC<br>"
 			 "All Rights Reserved</center>"
        "<p>"
diff --git a/rakefile.rb b/rakefile.rb
index e8b773f..6dd722f 100644
--- a/rakefile.rb
+++ b/rakefile.rb
@@ -6,7 +6,7 @@
 require 'rake/clean'
 
 # this will be improved later
-PCB_GCODE_VERSION = "3.6.5"
+PCB_GCODE_VERSION = "3.6.6"
 VERSION_KEYWORD = '$VERSION$'
 
 RELEASE_FILE = "~/Documents/pcb-gcode-#{PCB_GCODE_VERSION}.zip"