diff --git a/serde/Cargo.toml b/serde/Cargo.toml
index 4bacc0ad..f7ec49c7 100644
--- a/serde/Cargo.toml
+++ b/serde/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "serde"
-version = "0.9.0-rc3"
+version = "0.9.0-rc4"
 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 7688aa4f..c21118fd 100644
--- a/serde_codegen/Cargo.toml
+++ b/serde_codegen/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "serde_codegen"
-version = "0.9.0-rc3"
+version = "0.9.0-rc4"
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "Macros to auto-generate implementations for the serde framework"
diff --git a/serde_derive/Cargo.toml b/serde_derive/Cargo.toml
index 6cdbcbe6..61e82270 100644
--- a/serde_derive/Cargo.toml
+++ b/serde_derive/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "serde_derive"
-version = "0.9.0-rc3"
+version = "0.9.0-rc4"
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "Macros 1.1 implementation of #[derive(Serialize, Deserialize)]"
@@ -18,7 +18,7 @@ name = "serde_derive"
 proc-macro = true
 
 [dependencies.serde_codegen]
-version = "=0.9.0-rc3"
+version = "=0.9.0-rc4"
 path = "../serde_codegen"
 default-features = false
 features = ["with-syn"]
@@ -26,5 +26,5 @@ features = ["with-syn"]
 [dev-dependencies]
 compiletest_rs = "^0.2.0"
 fnv = "1.0"
-serde = { version = "0.9.0-rc3", path = "../serde" }
-serde_test = { version = "0.9.0-rc3", path = "../serde_test" }
+serde = { version = "0.9.0-rc4", path = "../serde" }
+serde_test = { version = "0.9.0-rc4", path = "../serde_test" }
diff --git a/serde_derive/no-std-tests/Cargo.toml b/serde_derive/no-std-tests/Cargo.toml
index ec5de0a3..22ae81de 100644
--- a/serde_derive/no-std-tests/Cargo.toml
+++ b/serde_derive/no-std-tests/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "serde_derive_tests_no_std"
-version = "0.9.0-rc3"
+version = "0.9.0-rc4"
 publish = false
 
 [dependencies]
diff --git a/serde_test/Cargo.toml b/serde_test/Cargo.toml
index 0c1f4bc5..e8464ecc 100644
--- a/serde_test/Cargo.toml
+++ b/serde_test/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "serde_test"
-version = "0.9.0-rc3"
+version = "0.9.0-rc4"
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "Token De/Serializer for testing De/Serialize implementations"
@@ -12,7 +12,7 @@ keywords = ["serde", "serialization"]
 include = ["Cargo.toml", "src/**/*.rs"]
 
 [dependencies]
-serde = { version = "0.9.0-rc3", path = "../serde" }
+serde = { version = "0.9.0-rc4", path = "../serde" }
 
 [badges]
 travis-ci = { repository = "serde-rs/serde" }
diff --git a/testing/Cargo.toml b/testing/Cargo.toml
index 9088a779..9d6e5baa 100644
--- a/testing/Cargo.toml
+++ b/testing/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "serde_testing"
-version = "0.9.0-rc3"
+version = "0.9.0-rc4"
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "A generic serialization/deserialization framework"