diff --git a/Cargo.lock b/Cargo.lock
index 1e256bb..3c329db 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "abnf"
 version = "0.6.1"