diff --git a/activestorage/db/update_migrate/20191206030411_create_active_storage_variant_records.rb b/activestorage/db/update_migrate/20191206030411_create_active_storage_variant_records.rb
index 804ae76f6f..f4948e87a0 100644
--- a/activestorage/db/update_migrate/20191206030411_create_active_storage_variant_records.rb
+++ b/activestorage/db/update_migrate/20191206030411_create_active_storage_variant_records.rb
@@ -1,12 +1,14 @@
 class CreateActiveStorageVariantRecords < ActiveRecord::Migration[6.0]
   def change
-    # Use Active Record's configured type for primary key
-    create_table :active_storage_variant_records, id: primary_key_type do |t|
-      t.belongs_to :blob, null: false, index: false, type: blobs_primary_key_type
-      t.string :variation_digest, null: false
+    unless table_exists?(:active_storage_variant_records)
+      # Use Active Record's configured type for primary key
+      create_table :active_storage_variant_records, id: primary_key_type do |t|
+        t.belongs_to :blob, null: false, index: false, type: blobs_primary_key_type
+        t.string :variation_digest, null: false
 
-      t.index %i[ blob_id variation_digest ], name: "index_active_storage_variant_records_uniqueness", unique: true
-      t.foreign_key :active_storage_blobs, column: :blob_id
+        t.index %i[ blob_id variation_digest ], name: "index_active_storage_variant_records_uniqueness", unique: true
+        t.foreign_key :active_storage_blobs, column: :blob_id
+      end
     end
   end