diff --git a/Gemfile.lock b/Gemfile.lock
index 14f19d5..184b7c4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,7 +2,7 @@ GEM
   remote: http://rubygems.org/
   specs:
     diff-lcs (1.1.3)
-    json (1.6.1)
+    json (2.3.0)
     rake (0.9.2.2)
     rspec (2.12.0)
       rspec-core (~> 2.12.0)
diff --git a/zabbixapi.gemspec b/zabbixapi.gemspec
index e179843..7bcda6a 100644
--- a/zabbixapi.gemspec
+++ b/zabbixapi.gemspec
@@ -12,7 +12,7 @@ Gem::Specification.new do |s|
   s.description = %q{Allows you to work with zabbix api from ruby.}
   s.licenses    = %w(MIT)
 
-  s.add_dependency('json', '~> 1.6', '>= 1.6.0')
+  s.add_dependency('json', '>= 1.6', '< 3.0')
 
   s.rubyforge_project = "zabbixapi"