diff --git a/bindings/python/Cargo.toml b/bindings/python/Cargo.toml
index 78220ae2..4567aa0e 100644
--- a/bindings/python/Cargo.toml
+++ b/bindings/python/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "safetensors-python"
-version = "0.4.2-dev.0"
+version = "0.4.2-rc.0"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
diff --git a/safetensors/Cargo.toml b/safetensors/Cargo.toml
index 8adf0461..c120b2d5 100644
--- a/safetensors/Cargo.toml
+++ b/safetensors/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "safetensors"
-version = "0.4.2-dev.0"
+version = "0.4.2-rc.0"
 edition = "2021"
 homepage = "https://github.com/huggingface/safetensors"
 repository = "https://github.com/huggingface/safetensors"