diff --git a/json/Cargo.toml b/json/Cargo.toml
index 28c62ba14..d9b1745f8 100644
--- a/json/Cargo.toml
+++ b/json/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "serde_json"
-version = "0.8.6"
+version = "0.9.0-rc1"
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "A JSON serialization file format"
diff --git a/json_tests/Cargo.toml b/json_tests/Cargo.toml
index f3f6b45dc..e3b268954 100644
--- a/json_tests/Cargo.toml
+++ b/json_tests/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "serde_json_tests"
-version = "0.8.6"
+version = "0.9.0-rc1"
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
 build = "build.rs"
 publish = false