diff --git a/Gemfile b/Gemfile
index 98a594be1c7..268cba1d6d4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -44,7 +44,7 @@ gem 'akismet', '~> 2.0'
 # Two-factor authentication
 gem 'devise-two-factor', '~> 3.0.0'
 gem 'rqrcode-rails3', '~> 0.1.7'
-gem 'attr_encrypted', '~> 1.3.4'
+gem 'attr_encrypted', '~> 3.0.0'
 
 # Browser detection
 gem "browser", '~> 1.0.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index 30a0a2fd183..7c873845cc3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -60,8 +60,8 @@ GEM
       oauth2 (~> 1.0)
     asciidoctor (1.5.3)
     ast (2.2.0)
-    attr_encrypted (1.3.4)
-      encryptor (>= 1.3.0)
+    attr_encrypted (3.0.1)
+      encryptor (~> 3.0.0)
     attr_required (1.0.0)
     autoprefixer-rails (6.2.3)
       execjs
@@ -178,7 +178,7 @@ GEM
     email_spec (1.6.0)
       launchy (~> 2.1)
       mail (~> 2.2)
-    encryptor (1.3.0)
+    encryptor (3.0.0)
     equalizer (0.0.11)
     erubis (2.7.0)
     escape_utils (1.1.1)
@@ -891,7 +891,7 @@ DEPENDENCIES
   allocations (~> 1.0)
   asana (~> 0.4.0)
   asciidoctor (~> 1.5.2)
-  attr_encrypted (~> 1.3.4)
+  attr_encrypted (~> 3.0.0)
   awesome_print (~> 1.2.0)
   babosa (~> 1.0.2)
   base32 (~> 0.3.0)
diff --git a/app/models/ci/variable.rb b/app/models/ci/variable.rb
index 10802f64813..f8d5d4486fd 100644
--- a/app/models/ci/variable.rb
+++ b/app/models/ci/variable.rb
@@ -11,6 +11,9 @@ module Ci
       format: { with: /\A[a-zA-Z0-9_]+\z/,
                 message: "can contain only letters, digits and '_'." }
 
-    attr_encrypted :value, mode: :per_attribute_iv_and_salt, key: Gitlab::Application.secrets.db_key_base
+    attr_encrypted :value, 
+       mode: :per_attribute_iv_and_salt,
+       key: Gitlab::Application.secrets.db_key_base,
+       algorithm: 'aes-256-cbc'
   end
 end
diff --git a/app/models/project_import_data.rb b/app/models/project_import_data.rb
index e2f9ffb69ac..ca8a9b4217b 100644
--- a/app/models/project_import_data.rb
+++ b/app/models/project_import_data.rb
@@ -6,7 +6,8 @@ class ProjectImportData < ActiveRecord::Base
                  key: Gitlab::Application.secrets.db_key_base,
                  marshal: true,
                  encode: true,
-                 mode: :per_attribute_iv_and_salt
+                 mode: :per_attribute_iv_and_salt,
+                 algorithm: 'aes-256-cbc'
 
   serialize :data, JSON
 
diff --git a/app/models/user.rb b/app/models/user.rb
index b5f478b3865..15b6cbc2255 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -20,6 +20,11 @@ class User < ActiveRecord::Base
   default_value_for :hide_no_password, false
   default_value_for :theme_id, gitlab_config.default_theme
 
+  attr_encrypted :otp_secret,
+    key:       Gitlab::Application.config.secret_key_base,
+    mode:      :per_attribute_iv_and_salt,
+    algorithm: 'aes-256-cbc'
+
   devise :two_factor_authenticatable,
          otp_secret_encryption_key: Gitlab::Application.config.secret_key_base
   alias_attribute :two_factor_enabled, :otp_required_for_login
diff --git a/spec/features/login_spec.rb b/spec/features/login_spec.rb
index 8c38dd5b122..54dcc50f4a2 100644
--- a/spec/features/login_spec.rb
+++ b/spec/features/login_spec.rb
@@ -121,7 +121,7 @@ feature 'Login', feature: true do
       user = create(:user, password: 'not-the-default')
 
       login_with(user)
-      expect(page).to have_content('Invalid login or password.')
+      expect(page).to have_content('Invalid Login or password.')
     end
   end
 
diff --git a/spec/models/ci/variable_spec.rb b/spec/models/ci/variable_spec.rb
index c712d211b0f..98f60087cf5 100644
--- a/spec/models/ci/variable_spec.rb
+++ b/spec/models/ci/variable_spec.rb
@@ -23,7 +23,7 @@ describe Ci::Variable, models: true do
     end
 
     it 'fails to decrypt if iv is incorrect' do
-      subject.encrypted_value_iv = nil
+      subject.encrypted_value_iv = SecureRandom.hex
       subject.instance_variable_set(:@value, nil)
       expect { subject.value }.
         to raise_error(OpenSSL::Cipher::CipherError, 'bad decrypt')