diff --git a/examples/serde-syntex-example/Cargo.toml b/examples/serde-syntex-example/Cargo.toml
index 902cac119..7e87e8339 100644
--- a/examples/serde-syntex-example/Cargo.toml
+++ b/examples/serde-syntex-example/Cargo.toml
@@ -9,9 +9,9 @@ default = ["serde_codegen"]
 nightly = ["serde_macros"]
 
 [build-dependencies]
-serde_codegen = { version = "^0.7.13", optional = true }
+serde_codegen = { version = "^0.7", optional = true }
 
 [dependencies]
-serde = "^0.7.13"
-serde_json = "^0.7.0"
-serde_macros = { version = "^0.7.13", optional = true }
+serde = "^0.7"
+serde_json = "^0.7"
+serde_macros = { version = "^0.7", optional = true }
diff --git a/serde/Cargo.toml b/serde/Cargo.toml
index 31ebef39d..493940d64 100644
--- a/serde/Cargo.toml
+++ b/serde/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "serde"
-version = "0.7.13"
+version = "0.7.14"
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "A generic serialization/deserialization framework"
diff --git a/serde_codegen/Cargo.toml b/serde_codegen/Cargo.toml
index 580d94977..eaebaa334 100644
--- a/serde_codegen/Cargo.toml
+++ b/serde_codegen/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "serde_codegen"
-version = "0.7.13"
+version = "0.7.14"
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "Macros to auto-generate implementations for the serde framework"
@@ -24,14 +24,14 @@ with-syntex = [
 ]
 
 [build-dependencies]
-quasi_codegen = { version = "^0.14.0", optional = true }
-syntex = { version = "^0.37.0", optional = true }
+quasi_codegen = { version = "^0.15.0", optional = true }
+syntex = { version = "^0.38.0", optional = true }
 
 [dependencies]
-aster = { version = "^0.20.0", default-features = false }
+aster = { version = "^0.21.1", default-features = false }
 clippy = { version = "^0.*", optional = true }
-quasi = { version = "^0.14.0", default-features = false }
-quasi_macros = { version = "^0.14.0", optional = true }
-serde_codegen_internals = { version = "^0.2.0", path = "../serde_codegen_internals", default-features = false }
-syntex = { version = "^0.37.0", optional = true }
-syntex_syntax = { version = "^0.37.0", optional = true }
+quasi = { version = "^0.15.0", default-features = false }
+quasi_macros = { version = "^0.15.0", optional = true }
+serde_codegen_internals = { version = "^0.3.0", path = "../serde_codegen_internals", default-features = false }
+syntex = { version = "^0.38.0", optional = true }
+syntex_syntax = { version = "^0.38.0", optional = true }
diff --git a/serde_codegen_internals/Cargo.toml b/serde_codegen_internals/Cargo.toml
index dd1651306..a6b135230 100644
--- a/serde_codegen_internals/Cargo.toml
+++ b/serde_codegen_internals/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "serde_codegen_internals"
-version = "0.2.0"
+version = "0.3.0"
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "AST representation used by Serde codegen. Unstable."
@@ -16,5 +16,5 @@ with-syntex = ["syntex_syntax", "syntex_errors"]
 
 [dependencies]
 clippy = { version = "^0.*", optional = true }
-syntex_syntax = { version = "^0.37.0", optional = true }
-syntex_errors = { version = "^0.37.0", optional = true }
+syntex_syntax = { version = "^0.38.0", optional = true }
+syntex_errors = { version = "^0.38.0", optional = true }
diff --git a/serde_codegen_internals/src/attr.rs b/serde_codegen_internals/src/attr.rs
index 0e8dba140..0b2ebf727 100644
--- a/serde_codegen_internals/src/attr.rs
+++ b/serde_codegen_internals/src/attr.rs
@@ -1,3 +1,5 @@
+use std::rc::Rc;
+
 use syntax::ast;
 use syntax::attr::{self, HasAttrs};
 use syntax::codemap::{Span, Spanned, respan};
@@ -517,33 +519,33 @@ struct Respanner<'a, 'b: 'a> {
 }
 
 impl<'a, 'b> Folder for Respanner<'a, 'b> {
-    fn fold_tt(&mut self, tt: TokenTree) -> TokenTree {
-        match tt {
+    fn fold_tt(&mut self, tt: &TokenTree) -> TokenTree {
+        match *tt {
             TokenTree::Token(span, ref tok) => {
                 TokenTree::Token(
                     self.new_span(span),
                     self.fold_token(tok.clone())
                 )
             }
-            TokenTree::Delimited(span, delimed) => {
+            TokenTree::Delimited(span, ref delimed) => {
                 TokenTree::Delimited(
                     self.new_span(span),
-                    tokenstream::Delimited {
+                    Rc::new(tokenstream::Delimited {
                         delim: delimed.delim,
                         open_span: delimed.open_span,
-                        tts: self.fold_tts(delimed.tts),
+                        tts: self.fold_tts(&delimed.tts),
                         close_span: delimed.close_span,
-                    }
+                    })
                 )
             }
-            TokenTree::Sequence(span, seq) => {
+            TokenTree::Sequence(span, ref seq) => {
                 TokenTree::Sequence(
                     self.new_span(span),
-                    tokenstream::SequenceRepetition {
-                        tts: self.fold_tts(seq.tts),
+                    Rc::new(tokenstream::SequenceRepetition {
+                        tts: self.fold_tts(&seq.tts),
                         separator: seq.separator.clone().map(|tok| self.fold_token(tok)),
-                        ..seq
-                    }
+                        ..**seq
+                    })
                 )
             }
         }
@@ -589,7 +591,7 @@ fn parse_string_via_tts<T, F>(cx: &ExtCtxt, name: &str, string: String, action:
         cx.parse_sess()));
 
     // Respan the spans to say they are all coming from this macro.
-    let tts = Respanner { cx: cx }.fold_tts(tts);
+    let tts = Respanner { cx: cx }.fold_tts(&tts);
 
     let mut parser = parse::new_parser_from_tts(cx.parse_sess(), cx.cfg(), tts);
 
diff --git a/serde_macros/Cargo.toml b/serde_macros/Cargo.toml
index a59b63614..cb642805a 100644
--- a/serde_macros/Cargo.toml
+++ b/serde_macros/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "serde_macros"
-version = "0.7.13"
+version = "0.7.14"
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "Macros to auto-generate implementations for the serde framework"
@@ -18,15 +18,15 @@ nightly-testing = ["clippy", "serde/nightly-testing", "serde_codegen/nightly-tes
 
 [dependencies]
 clippy = { version = "^0.*", optional = true }
-serde_codegen = { version = "^0.7.13", path = "../serde_codegen", default-features = false, features = ["nightly"] }
+serde_codegen = { version = "^0.7.14", path = "../serde_codegen", default-features = false, features = ["nightly"] }
 
 [dev-dependencies]
 clippy = "^0.0.78"
 compiletest_rs = "^0.2.0"
 fnv = "1.0"
 rustc-serialize = "^0.3.16"
-serde = { version = "^0.7.13", path = "../serde" }
-serde_test = { version = "^0.7.13", path = "../serde_test" }
+serde = { version = "^0.7.14", path = "../serde" }
+serde_test = { version = "^0.7.14", path = "../serde_test" }
 
 [[test]]
 name = "test"
diff --git a/serde_test/Cargo.toml b/serde_test/Cargo.toml
index c5cea73ab..600215644 100644
--- a/serde_test/Cargo.toml
+++ b/serde_test/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "serde_test"
-version = "0.7.13"
+version = "0.7.14"
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "Token De/Serializer for testing De/Serialize implementations"
@@ -11,4 +11,4 @@ keywords = ["serde", "serialization"]
 include = ["Cargo.toml", "src/**/*.rs"]
 
 [dependencies]
-serde = { version = "0.7.13", path = "../serde" }
+serde = { version = "0.7.14", path = "../serde" }
diff --git a/testing/Cargo.toml b/testing/Cargo.toml
index 821d574cc..4eb83a2a5 100644
--- a/testing/Cargo.toml
+++ b/testing/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "serde_testing"
-version = "0.7.13"
+version = "0.7.14"
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "A generic serialization/deserialization framework"