diff --git a/scroll_derive/Cargo.toml b/scroll_derive/Cargo.toml
index 8e6a3b8..1558fb2 100644
--- a/scroll_derive/Cargo.toml
+++ b/scroll_derive/Cargo.toml
@@ -17,7 +17,7 @@ proc-macro = true
 [dependencies]
 proc-macro2 = "1"
 quote = "1"
-syn = "1"
+syn = "2"
 
 [dev-dependencies.scroll]
 version = "0.11"