diff --git a/modules/redhen_engagement/redhen_engagement.install b/modules/redhen_engagement/redhen_engagement.install
index f2d7157..42cf02e 100644
--- a/modules/redhen_engagement/redhen_engagement.install
+++ b/modules/redhen_engagement/redhen_engagement.install
@@ -220,3 +220,14 @@ function redhen_engagement_update_7101(&$sandbox) {
   $sql = 'UPDATE redhen_contact rc SET engagement_score = COALESCE((SELECT SUM(score) FROM redhen_engagement re JOIN redhen_engagement_score res on re.engagement_score = res.name WHERE re.contact_id = rc.contact_id), 0)';
   db_query($sql);
 }
+
+/**
+ * Create indexes for foreign keys.
+ */
+function redhen_engagement_update_7102(&$sandbox) {
+  if (!db_index_exists('redhen_engagement', 'engagement_redhen_contact')) {
+    db_add_index('redhen_engagement', 'engagement_redhen_contact', array('contact_id'));
+  }
+  db_add_index('redhen_engagement', 'engagement_author', array('author_uid'));
+  db_add_index('redhen_engagement', 'engagement_engagement_score', array('engagement_score'));
+}