diff --git a/.travis.yml b/.travis.yml
index be6b9832..5dc8f952 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,3 +1,4 @@
+sudo: false
 language: rust
 rust:
   - stable
diff --git a/serde_codegen/Cargo.toml b/serde_codegen/Cargo.toml
index 968ca3a6..ec39afd3 100644
--- a/serde_codegen/Cargo.toml
+++ b/serde_codegen/Cargo.toml
@@ -10,7 +10,7 @@ build = "build.rs"
 [features]
 default = ["with-syntex"]
 nightly = ["quasi_macros"]
-with-syntex = ["quasi/with-syntex", "quasi_codegen/with-syntex", "syntex", "syntex_syntax"]
+with-syntex = ["quasi/with-syntex", "quasi_codegen", "quasi_codegen/with-syntex", "syntex", "syntex_syntax"]
 
 [build-dependencies]
 quasi_codegen = { verision = "*", optional = true }
diff --git a/serde_tests/Cargo.toml b/serde_tests/Cargo.toml
index ae021611..461ce363 100644
--- a/serde_tests/Cargo.toml
+++ b/serde_tests/Cargo.toml
@@ -11,7 +11,7 @@ keywords = ["serialization"]
 build = "build.rs"
 
 [build-dependencies]
-syntex = { version = "*", optional = true }
+syntex = { version = "*" }
 syntex_syntax = { version = "*" }
 serde_codegen = { version = "*", path = "../serde_codegen", features = ["with-syntex"] }