diff --git a/lib/ndjson.rb b/lib/ndjson.rb
index 6048885..c98260f 100644
--- a/lib/ndjson.rb
+++ b/lib/ndjson.rb
@@ -12,6 +12,8 @@ def initialize input
       end
     end
 
+    include Enumerable
+
     def each &block
       @input.each do |line|
         json_line = JSON.parse(line)