diff --git a/keepass-password-generator.gemspec b/keepass-password-generator.gemspec
index f145b28..cc53f53 100644
--- a/keepass-password-generator.gemspec
+++ b/keepass-password-generator.gemspec
@@ -19,8 +19,6 @@ Gem::Specification.new do |s|
   s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
   s.require_paths = ["lib"]
   
-  s.add_dependency 'activesupport', '>= 2.2.0'
-
   s.add_development_dependency 'yard'
   s.add_development_dependency 'bluecloth'
   s.add_development_dependency 'rspec'
diff --git a/lib/keepass/random.rb b/lib/keepass/random.rb
index 70c9c75..50fd479 100644
--- a/lib/keepass/random.rb
+++ b/lib/keepass/random.rb
@@ -1,4 +1,4 @@
-require 'active_support/secure_random'
+require 'securerandom'
 
 module KeePass
   
@@ -14,7 +14,7 @@ module KeePass
     # @return [Integer|Float] the random number
     # @see ActiveSupport::SecureRandom#random_number
     def self.random_number(n = 0)
-      ActiveSupport::SecureRandom.random_number(n)
+      SecureRandom.random_number(n)
     end
     
     # Returns a randomly sampled item from the array.
@@ -36,3 +36,4 @@ module KeePass
   end
 
 end
+
diff --git a/spec/random_spec.rb b/spec/random_spec.rb
index 362d693..68b8e18 100644
--- a/spec/random_spec.rb
+++ b/spec/random_spec.rb
@@ -5,12 +5,12 @@ describe KeePass::Random do
   describe "#random_number" do
     
     it "should use ActiveSupport::SecureRandom" do
-      ActiveSupport::SecureRandom.should_receive(:random_number).once.with(12)
+      SecureRandom.should_receive(:random_number).once.with(12)
       described_class.random_number(12)
     end
 
     it "should accept default argument" do
-      ActiveSupport::SecureRandom.should_receive(:random_number).with(0)
+      SecureRandom.should_receive(:random_number).with(0)
       described_class.random_number
     end