diff --git a/core/gleam.toml b/core/gleam.toml
index 6cc8f50..354ef69 100644
--- a/core/gleam.toml
+++ b/core/gleam.toml
@@ -1,5 +1,5 @@
 name = "ywt_core"
-version = "1.0.0"
+version = "1.0.1"
 description = "Types and decoders used in the ywt package."
 licenses = ["BSD-3-Clause"]
 repository = { type = "gitlab", user = "arkandos", repo = "ywt", path = "core" }
diff --git a/core/src/ywt/sign_key.gleam b/core/src/ywt/sign_key.gleam
index 0d344be..b308e8b 100644
--- a/core/src/ywt/sign_key.gleam
+++ b/core/src/ywt/sign_key.gleam
@@ -190,7 +190,7 @@ pub fn with_random_id(key: SignKey) -> SignKey {
   }
 }
 
-@external(erlang, "ywt__core_ffi", "random_id")
+@external(erlang, "ywt_core_ffi", "random_id")
 @external(javascript, "../ywt_core_ffi.mjs", "random_id")
 fn get_random_id() -> String