diff --git a/Cargo.toml b/Cargo.toml
index 161dba3..83d3e9f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "extism-pdk"
-version = "1.0.0-beta.0"
+version = "1.0.0-rc1"
 edition = "2021"
 authors = ["The Extism Authors", "oss@extism.org"]
 license = "BSD-3-Clause"
@@ -12,7 +12,7 @@ description = "Extism Plug-in Development Kit (PDK) for Rust"
 anyhow = "1"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
-extism-pdk-derive = {path = "./derive", version = "1.0.0-beta.0"}
+extism-pdk-derive = {path = "./derive", version = "1.0.0-rc1"}
 extism-manifest = {version = "0.5.0", optional = true}
 extism-convert = { version = "0.2"}
 base64 = "0.21.0"
diff --git a/README.md b/README.md
index 734e2f3..0161026 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ cargo new --lib my-plugin
 Add the library from [crates.io](https://crates.io/crates/extism-pdk).
 
 ```bash
-cargo add extism-pdk@1.0.0-beta.0
+cargo add extism-pdk@1.0.0-rc1
 ```
 
 Change your `Cargo.toml` to set the crate-type to `cdylib` (this instructs the compiler to produce a dynamic library, which for our target will be a Wasm binary):
diff --git a/derive/Cargo.toml b/derive/Cargo.toml
index 3adef69..4334f8f 100644
--- a/derive/Cargo.toml
+++ b/derive/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "extism-pdk-derive"
-version = "1.0.0-beta.0"
+version = "1.0.0-rc1"
 edition = "2021"
 authors = ["The Extism Authors", "oss@extism.org"]
 license = "BSD-3-Clause"