diff --git a/lib/logan/todo.rb b/lib/logan/todo.rb
index 125dfbc..297aafa 100644
--- a/lib/logan/todo.rb
+++ b/lib/logan/todo.rb
@@ -22,7 +22,7 @@ class Todo
     def initialize h
       super
 
-      unless app_url.nil? || app_url.blank?
+      unless app_url.nil? || app_url.empty? || !/[^[[:space:]]]/.match(app_url)
         @project_id ||= app_url[/projects\/(\d*)\//, 1].to_i
       end
 
diff --git a/logan.gemspec b/logan.gemspec
index 0dac8cb..b424ac8 100644
--- a/logan.gemspec
+++ b/logan.gemspec
@@ -11,8 +11,8 @@ Gem::Specification.new do |s|
   s.license     = 'MIT'
   s.required_ruby_version = '>= 1.8.7'
 
-  s.add_runtime_dependency 'httparty', '0.11.0'
-  s.add_runtime_dependency 'json', '~> 1.8'
+  s.add_runtime_dependency 'httparty', '>= 0.11.0'
+  s.add_runtime_dependency 'json', '~> 2.1'
 
   s.add_development_dependency 'yard', '~> 0.8'
   s.add_development_dependency 'redcarpet', '2.3.0'