diff --git a/packages/yew-macro/Cargo.toml b/packages/yew-macro/Cargo.toml
index 51d3adcc..1059ffc3 100644
--- a/packages/yew-macro/Cargo.toml
+++ b/packages/yew-macro/Cargo.toml
@@ -20,7 +20,7 @@ boolinator = "2"
 proc-macro-error = "1"
 proc-macro2 = "1"
 quote = "1"
-syn = { version = "1", features = ["full", "extra-traits", "visit-mut"] }
+syn = { version = "2", features = ["full", "extra-traits", "visit-mut"] }
 once_cell = "1"
 prettyplease = "0.1.1"
 
diff --git a/packages/yew-router-macro/Cargo.toml b/packages/yew-router-macro/Cargo.toml
index e0f5662e..2dca9e41 100644
--- a/packages/yew-router-macro/Cargo.toml
+++ b/packages/yew-router-macro/Cargo.toml
@@ -14,7 +14,7 @@ proc-macro = true
 [dependencies]
 proc-macro2 = "1"
 quote = "1"
-syn = { version = "1", features = ["full","extra-traits"] }
+syn = { version = "2", features = ["full","extra-traits"] }
 
 [dev-dependencies]
 rustversion = "1"