diff --git a/rustler/Cargo.toml b/rustler/Cargo.toml
index 6e0b6cac..3c9f154d 100644
--- a/rustler/Cargo.toml
+++ b/rustler/Cargo.toml
@@ -20,7 +20,7 @@ nif_version_2_17 = ["nif_version_2_16", "rustler_sys/nif_version_2_17"]
 [dependencies]
 lazy_static = "1.4"
 rustler_codegen = { path = "../rustler_codegen", version = "0.31.0", optional = true}
-rustler_sys = { path = "../rustler_sys", version = "~2.3.2" }
+rustler_sys = { path = "../rustler_sys", version = "~2.4.0" }
 
 [package.metadata.release]
 
diff --git a/rustler_sys/Cargo.toml b/rustler_sys/Cargo.toml
index 788c9756..6ec19f31 100644
--- a/rustler_sys/Cargo.toml
+++ b/rustler_sys/Cargo.toml
@@ -20,7 +20,7 @@ name = "rustler_sys"
 # When depending on this crate, you should ALWAYS
 # use a tilde requirements with AT LEAST `~MAJOR.MINOR`.
 # Example: "~2.0"
-version = "2.3.2"
+version = "2.4.0"
 
 authors = ["Daniel Goertzen <daniel.goertzen@gmail.com>"]
 description = "Create Erlang NIF modules in Rust using the C NIF API."