diff --git a/db/migrate/20130917200611_create_qa_subject_mesh_terms.rb b/db/migrate/20130917200611_create_qa_subject_mesh_terms.rb
index b7e4bf5a..110a03b0 100644
--- a/db/migrate/20130917200611_create_qa_subject_mesh_terms.rb
+++ b/db/migrate/20130917200611_create_qa_subject_mesh_terms.rb
@@ -1,4 +1,4 @@
-class CreateQaSubjectMeshTerms < ActiveRecord::Migration
+class CreateQaSubjectMeshTerms < ActiveRecord::Migration[4.2]
   def change
     create_table :qa_subject_mesh_terms do |t|
       t.string :term_id
diff --git a/db/migrate/20130917201026_create_qa_mesh_tree.rb b/db/migrate/20130917201026_create_qa_mesh_tree.rb
index d7e3d531..451b28e2 100644
--- a/db/migrate/20130917201026_create_qa_mesh_tree.rb
+++ b/db/migrate/20130917201026_create_qa_mesh_tree.rb
@@ -1,4 +1,4 @@
-class CreateQaMeshTree < ActiveRecord::Migration
+class CreateQaMeshTree < ActiveRecord::Migration[4.2]
   def change
     create_table :qa_mesh_trees do |t|
       t.string :term_id
diff --git a/db/migrate/20130918141523_add_term_lower_to_qa_subject_mesh_terms.rb b/db/migrate/20130918141523_add_term_lower_to_qa_subject_mesh_terms.rb
index 7637e514..dd060400 100644
--- a/db/migrate/20130918141523_add_term_lower_to_qa_subject_mesh_terms.rb
+++ b/db/migrate/20130918141523_add_term_lower_to_qa_subject_mesh_terms.rb
@@ -1,4 +1,4 @@
-class AddTermLowerToQaSubjectMeshTerms < ActiveRecord::Migration
+class AddTermLowerToQaSubjectMeshTerms < ActiveRecord::Migration[4.2]
   def change
     add_column :qa_subject_mesh_terms, :term_lower, :string
     add_index :qa_subject_mesh_terms, :term_lower