diff --git a/serde/Cargo.toml b/serde/Cargo.toml
index 125f4196..0879175a 100644
--- a/serde/Cargo.toml
+++ b/serde/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "serde"
-version = "0.6.12"
+version = "0.6.13"
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "A generic serialization/deserialization framework"
@@ -17,5 +17,5 @@ num-impls = ["num-bigint", "num-complex", "num-rational"]
 num-rational = ["num/rational"]
 
 [dependencies]
-clippy = { version = "^0.0.39", optional = true }
+clippy = { version = "^0.0.41", optional = true }
 num = { version = "^0.1.27", default-features = false }
diff --git a/serde_codegen/Cargo.toml b/serde_codegen/Cargo.toml
index 46b3ec8a..21d7c1b4 100644
--- a/serde_codegen/Cargo.toml
+++ b/serde_codegen/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "serde_codegen"
-version = "0.6.12"
+version = "0.6.13"
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "Macros to auto-generate implementations for the serde framework"
@@ -16,13 +16,13 @@ nightly-testing = ["clippy"]
 with-syntex = ["quasi/with-syntex", "quasi_codegen", "quasi_codegen/with-syntex", "syntex", "syntex_syntax"]
 
 [build-dependencies]
-quasi_codegen = { version = "^0.5.0", optional = true }
-syntex = { version = "^0.27.0", optional = true }
+quasi_codegen = { version = "^0.6.0", optional = true }
+syntex = { version = "^0.28.0", optional = true }
 
 [dependencies]
-aster = { version = "^0.11.0", default-features = false }
-clippy = { version = "^0.0.39", optional = true }
-quasi = { version = "^0.5.0", default-features = false }
-quasi_macros = { version = "^0.5.0", optional = true }
-syntex = { version = "^0.27.0", optional = true }
-syntex_syntax = { version = "^0.27.0", optional = true }
+aster = { version = "^0.12.0", default-features = false }
+clippy = { version = "^0.0.41", optional = true }
+quasi = { version = "^0.6.0", default-features = false }
+quasi_macros = { version = "^0.6.0", optional = true }
+syntex = { version = "^0.28.0", optional = true }
+syntex_syntax = { version = "^0.28.0", optional = true }
diff --git a/serde_codegen/src/de.rs b/serde_codegen/src/de.rs
index 8f6860b5..d835f5e5 100644
--- a/serde_codegen/src/de.rs
+++ b/serde_codegen/src/de.rs
@@ -397,7 +397,7 @@ fn deserialize_seq(
     struct_path: ast::Path,
     fields: usize,
 ) -> P<ast::Expr> {
-    let let_values: Vec<P<ast::Stmt>> = (0 .. fields)
+    let let_values: Vec<ast::Stmt> = (0 .. fields)
         .map(|i| {
             let name = builder.id(format!("__field{}", i));
             quote_stmt!(cx,
@@ -431,7 +431,7 @@ fn deserialize_struct_as_seq(
     struct_path: ast::Path,
     fields: &[ast::StructField],
 ) -> Result<P<ast::Expr>, Error> {
-    let let_values: Vec<P<ast::Stmt>> = (0 .. fields.len())
+    let let_values: Vec<_> = (0 .. fields.len())
         .map(|i| {
             let name = builder.id(format!("__field{}", i));
             quote_stmt!(cx,
@@ -920,7 +920,7 @@ fn deserialize_struct_visitor(
     struct_path: ast::Path,
     fields: &[ast::StructField],
     container_attrs: &attr::ContainerAttrs,
-) -> Result<(Vec<P<ast::Item>>, P<ast::Stmt>, P<ast::Expr>), Error> {
+) -> Result<(Vec<P<ast::Item>>, ast::Stmt, P<ast::Expr>), Error> {
     let field_visitor = deserialize_field_visitor(
         cx,
         builder,
@@ -977,7 +977,7 @@ fn deserialize_map(
         .collect();
 
     // Declare each field.
-    let let_values: Vec<P<ast::Stmt>> = field_names.iter()
+    let let_values: Vec<ast::Stmt> = field_names.iter()
         .map(|field_name| quote_stmt!(cx, let mut $field_name = None;).unwrap())
         .collect();
 
diff --git a/serde_macros/Cargo.toml b/serde_macros/Cargo.toml
index 5b02d7f3..7203cd87 100644
--- a/serde_macros/Cargo.toml
+++ b/serde_macros/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "serde_macros"
-version = "0.6.12"
+version = "0.6.13"
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "Macros to auto-generate implementations for the serde framework"
@@ -16,14 +16,14 @@ plugin = true
 nightly-testing = ["clippy", "serde/nightly-testing", "serde_codegen/nightly-testing"]
 
 [dependencies]
-clippy = { version = "^0.0.39", optional = true }
-serde_codegen = { version = "^0.6.12", path = "../serde_codegen", default-features = false, features = ["nightly"] }
+clippy = { version = "^0.0.41", optional = true }
+serde_codegen = { version = "^0.6.13", path = "../serde_codegen", default-features = false, features = ["nightly"] }
 
 [dev-dependencies]
 compiletest_rs = "^0.0.11"
 num = "^0.1.27"
 rustc-serialize = "^0.3.16"
-serde = { version = "^0.6.12", path = "../serde", features = ["num-impls"] }
+serde = { version = "^0.6.13", path = "../serde", features = ["num-impls"] }
 
 [[test]]
 name = "test"
diff --git a/serde_tests/Cargo.toml b/serde_tests/Cargo.toml
index 130d9dd4..a4ed74d9 100644
--- a/serde_tests/Cargo.toml
+++ b/serde_tests/Cargo.toml
@@ -14,18 +14,18 @@ build = "build.rs"
 nightly-testing = ["clippy", "serde/nightly-testing", "serde_codegen/nightly-testing"]
 
 [build-dependencies]
-syntex = { version = "^0.27.0" }
-syntex_syntax = { version = "^0.27.0" }
-serde_codegen = { version = "^0.6.12", path = "../serde_codegen", features = ["with-syntex"] }
+syntex = { version = "^0.28.0" }
+syntex_syntax = { version = "^0.28.0" }
+serde_codegen = { version = "^0.6.13", path = "../serde_codegen", features = ["with-syntex"] }
 
 [dev-dependencies]
 num = "^0.1.26"
 rustc-serialize = "^0.3.16"
 serde = { version = "*", path = "../serde", features = ["num-impls"] }
-syntex = "^0.27.0"
+syntex = "^0.28.0"
 
 [dependencies]
-clippy = { version = "^0.0.39", optional = true }
+clippy = { version = "^0.0.41", optional = true }
 
 [[test]]
 name = "test"