diff --git a/eventually-macros/Cargo.toml b/eventually-macros/Cargo.toml
index c083ee6a..c889f274 100644
--- a/eventually-macros/Cargo.toml
+++ b/eventually-macros/Cargo.toml
@@ -7,6 +7,6 @@ edition = "2021"
 proc-macro = true
 
 [dependencies]
-syn = { version = "1.0.109", features = ["full"] }
+syn = { version = "2.0.42", features = ["full"] }
 quote = "1.0.33"
 eventually = { path = "../eventually" }