diff --git a/db/migrate/20200908084257_change_attachment_size_fields_to_bigint.rb b/db/migrate/20200908084257_change_attachment_size_fields_to_bigint.rb
new file mode 100644
index 00000000000..65d36a3c867
--- /dev/null
+++ b/db/migrate/20200908084257_change_attachment_size_fields_to_bigint.rb
@@ -0,0 +1,7 @@
+class ChangeAttachmentSizeFieldsToBigint < ActiveRecord::Migration[5.1]
+  def change
+    change_column :site_customization_images, :image_file_size, :bigint
+    change_column :images, :attachment_file_size, :bigint
+    change_column :documents, :attachment_file_size, :bigint
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index f2002efc645..c513ce015ff 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20200519120717) do
+ActiveRecord::Schema.define(version: 20200908084257) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -545,7 +545,7 @@
     t.string "title"
     t.string "attachment_file_name"
     t.string "attachment_content_type"
-    t.integer "attachment_file_size"
+    t.bigint "attachment_file_size"
     t.datetime "attachment_updated_at"
     t.integer "user_id"
     t.string "documentable_type"
@@ -641,7 +641,7 @@
     t.datetime "updated_at", null: false
     t.string "attachment_file_name"
     t.string "attachment_content_type"
-    t.integer "attachment_file_size"
+    t.bigint "attachment_file_size"
     t.datetime "attachment_updated_at"
     t.integer "user_id"
     t.index ["imageable_type", "imageable_id"], name: "index_images_on_imageable_type_and_imageable_id"
@@ -1347,7 +1347,7 @@
     t.string "name", null: false
     t.string "image_file_name"
     t.string "image_content_type"
-    t.integer "image_file_size"
+    t.bigint "image_file_size"
     t.datetime "image_updated_at"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false