diff --git a/attributes/Cargo.toml b/attributes/Cargo.toml
index 4a4c23c9..30f60ec3 100644
--- a/attributes/Cargo.toml
+++ b/attributes/Cargo.toml
@@ -16,7 +16,7 @@ include = ["/src/*", "/Cargo.toml", "/README.md"]
 proc-macro = true
 
 [dependencies]
-syn = { version = "1.0", features = ["full"] }
+syn = { version = "2.0", features = ["full"] }
 quote = "1.0"
 proc-macro2 = "1.0"
 itertools = "0.11"