diff --git a/derive/Cargo.toml b/derive/Cargo.toml
index d537270..9437a90 100644
--- a/derive/Cargo.toml
+++ b/derive/Cargo.toml
@@ -18,7 +18,7 @@ proc-macro = true
 syn = "1.0"
 proc-macro2 = "1.0"
 quote = "1.0"
-itertools = "0.11"
+itertools = "0.12"
 frunk_proc_macro_helpers = "0.1"
 
 [dev-dependencies]