diff --git a/lib/dotenv.rb b/lib/dotenv.rb
index 007692a..66c8408 100644
--- a/lib/dotenv.rb
+++ b/lib/dotenv.rb
@@ -1,3 +1,4 @@
+require "dotenv/version"
 require "dotenv/parser"
 require "dotenv/environment"
 require "dotenv/missing_keys"