diff --git a/src/multi.rs b/src/multi.rs
index 20f5000..b2983bc 100644
--- a/src/multi.rs
+++ b/src/multi.rs
@@ -208,3 +208,7 @@ impl_tuple!{A B C D E F G H I}
 impl_tuple!{A B C D E F G H I J}
 impl_tuple!{A B C D E F G H I J K}
 impl_tuple!{A B C D E F G H I J K L}
+impl_tuple!{A B C D E F G H I J K L M}
+impl_tuple!{A B C D E F G H I J K L M N}
+impl_tuple!{A B C D E F G H I J K L M N O}
+impl_tuple!{A B C D E F G H I J K L M N O P}