2 files changed, 3 insertions, 3 deletions
diff --git a/activerecord/lib/active_record/migration.rb b/activerecord/lib/active_record/migration.rb
index 9db017cded..7edfec9903 100644
--- a/activerecord/lib/active_record/migration.rb
+++ b/activerecord/lib/active_record/migration.rb
@@ -1071,7 +1071,7 @@ module ActiveRecord
 
     def get_all_versions
       if schema_migration.table_exists?
-        schema_migration.all_versions
+        schema_migration.all_versions.map(&:to_i)
       else
         []
       end
@@ -1247,7 +1247,7 @@ module ActiveRecord
     end
 
     def load_migrated
-      @migrated_versions = Set.new(@schema_migration.all_versions)
+      @migrated_versions = Set.new(@schema_migration.all_versions.map(&:to_i))
     end
 
     private
diff --git a/activerecord/lib/active_record/schema_migration.rb b/activerecord/lib/active_record/schema_migration.rb
index 58b21d2cc8..dec7fee986 100644
--- a/activerecord/lib/active_record/schema_migration.rb
+++ b/activerecord/lib/active_record/schema_migration.rb
@@ -45,7 +45,7 @@ module ActiveRecord
       end
 
       def all_versions
-        order(:version).pluck(:version).map(&:to_i)
+        order(:version).pluck(:version)
       end
     end