diff --git a/db/migrate/20151023143719_add_missing_indexes.rb b/db/migrate/20151023143719_add_missing_indexes.rb
new file mode 100644
index 00000000..551f2319
--- /dev/null
+++ b/db/migrate/20151023143719_add_missing_indexes.rb
@@ -0,0 +1,16 @@
+class AddMissingIndexes < ActiveRecord::Migration
+  def change
+    add_index :topics, :user_id
+    add_index :topics, :metacode_id
+    add_index :synapses, [:node2_id, :node2_id]
+    add_index :synapses, [:node1_id, :node1_id]
+    add_index :synapses, :user_id
+    add_index :synapses, :node1_id
+    add_index :synapses, :node2_id
+    add_index :mappings, [:map_id, :topic_id]
+    add_index :mappings, [:map_id, :synapse_id]
+    add_index :mappings, :map_id
+    add_index :mappings, :user_id
+    add_index :maps, :user_id
+  end
+end