diff --git a/googlecharts.gemspec b/googlecharts.gemspec
index f44e97d..e29b03e 100644
--- a/googlecharts.gemspec
+++ b/googlecharts.gemspec
@@ -1,6 +1,6 @@
 Gem::Specification.new do |s|
   s.name = %q{googlecharts}
-  s.version = "1.3.6"
+  s.version = "1.3.7"
 
   s.specification_version = 2 if s.respond_to? :specification_version=