diff --git a/rust/Cargo.lock b/rust/Cargo.lock
index d4bb541fe..8022ca0a7 100644
--- a/rust/Cargo.lock
+++ b/rust/Cargo.lock
@@ -919,7 +919,7 @@ dependencies = [
 
 [[package]]
 name = "langsmith-pyo3"
-version = "0.1.0-rc3"
+version = "0.1.0-rc4"
 dependencies = [
  "langsmith-tracing-client",
  "orjson",
diff --git a/rust/crates/langsmith-pyo3/Cargo.toml b/rust/crates/langsmith-pyo3/Cargo.toml
index 5def10b38..a54bd1d70 100644
--- a/rust/crates/langsmith-pyo3/Cargo.toml
+++ b/rust/crates/langsmith-pyo3/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "langsmith-pyo3"
-version = "0.1.0-rc3"
+version = "0.1.0-rc4"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html