diff --git a/overflower-plugin/Cargo.toml b/overflower-plugin/Cargo.toml
index ab971fc..4f47e56 100644
--- a/overflower-plugin/Cargo.toml
+++ b/overflower-plugin/Cargo.toml
@@ -17,5 +17,5 @@ travis-ci = { repository = "llogiq/overflower" }
 proc_macro = true
 
 [dependencies]
-syn = { version = "1.0.5", features = ["extra-traits", "full", "fold", "parsing", "proc-macro"] }
+syn = { version = "2.0.18", features = ["extra-traits", "full", "fold", "parsing", "proc-macro"] }
 quote = "1.0.0"