diff --git a/app/models/ci/variable.rb b/app/models/ci/variable.rb
index f8d5d4486f..c9c47ec741 100644
--- a/app/models/ci/variable.rb
+++ b/app/models/ci/variable.rb
@@ -13,6 +13,7 @@ module Ci
 
     attr_encrypted :value, 
        mode: :per_attribute_iv_and_salt,
+       insecure_mode: true,
        key: Gitlab::Application.secrets.db_key_base,
        algorithm: 'aes-256-cbc'
   end
diff --git a/app/models/project_import_data.rb b/app/models/project_import_data.rb
index ca8a9b4217..331123a5a5 100644
--- a/app/models/project_import_data.rb
+++ b/app/models/project_import_data.rb
@@ -7,6 +7,7 @@ class ProjectImportData < ActiveRecord::Base
                  marshal: true,
                  encode: true,
                  mode: :per_attribute_iv_and_salt,
+                 insecure_mode: true,
                  algorithm: 'aes-256-cbc'
 
   serialize :data, JSON
diff --git a/app/models/user.rb b/app/models/user.rb
index 599b2fb119..767d6366c7 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -25,6 +25,7 @@ class User < ActiveRecord::Base
   attr_encrypted :otp_secret,
     key:       Gitlab::Application.config.secret_key_base,
     mode:      :per_attribute_iv_and_salt,
+    insecure_mode: true,
     algorithm: 'aes-256-cbc'
 
   devise :two_factor_authenticatable,