diff --git a/hobofields/lib/hobo_fields/migration_generator.rb b/hobofields/lib/hobo_fields/migration_generator.rb
index 0ff4085..fa340b6 100644
--- a/hobofields/lib/hobo_fields/migration_generator.rb
+++ b/hobofields/lib/hobo_fields/migration_generator.rb
@@ -136,6 +136,8 @@ module HoboFields
       to_drop = db_tables - model_table_names - ['schema_info', 'schema_migrations']
       to_change = model_table_names
 
+      to_drop -= [CGI::Session::ActiveRecordStore::Session.table_name] if ActionController::Base.session_store == CGI::Session::ActiveRecordStore
+
       to_rename = extract_table_renames!(to_create, to_drop)
 
       renames = to_rename.map do |old_name, new_name|