diff --git a/serde_codegen_internals/Cargo.toml b/serde_codegen_internals/Cargo.toml
index 861d9011..c7ab8ead 100644
--- a/serde_codegen_internals/Cargo.toml
+++ b/serde_codegen_internals/Cargo.toml
@@ -11,7 +11,7 @@ keywords = ["serde", "serialization"]
 include = ["Cargo.toml", "src/**/*.rs"]
 
 [dependencies]
-syn = "0.11"
+syn = { version = "0.11", default-features = false, features = ["parsing"] }
 
 [badges]
 travis-ci = { repository = "serde-rs/serde" }