diff --git a/range_math.gemspec b/range_math.gemspec
index 4a56454..b281e7f 100644
--- a/range_math.gemspec
+++ b/range_math.gemspec
@@ -1,11 +1,12 @@
 Gem::Specification.new do |s|
   s.name = "range_math"
-  s.version = "0.7.0"
+  s.version = "0.7.1"
 
   s.required_rubygems_version = Gem::Requirement.new(">= 0") if s.respond_to? :required_rubygems_version=
   s.authors = ["muflax"]
   s.description = "use ranges in math expression"
   s.email = "mail@muflax.com"
+  s.license = "GPL-2"
   s.extra_rdoc_files = [
     "README"
   ]