diff --git a/Cargo.toml b/Cargo.toml
index b42b8aa..7b77774 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,7 +14,7 @@ id-ulid = { path = "./crates/id-ulid" }
 
 # non-local crates
 chrono = { version = "0.4.34", features = ["serde"] }
-config = { version = "0.14", default-features = false, features = [
+config = { version = "0.15", default-features = false, features = [
   "json",
   "json5_rs",
   "json5",