diff --git a/Cargo.toml b/Cargo.toml
index 11ea937..e372aff 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,7 +14,7 @@ categories = ["api-bindings", "asynchronous", "database"]
 
 [dependencies]
 serde = { version = "^1.0", features = ["derive"] }
-serde_with = { version = "^3.8", default-features = false, features = ["base64", "std", "macros"] }
+serde_with = { version = "^3.21", default-features = false, features = ["base64", "std", "macros"] }
 # `raw_value` carries each result-row cell as its JSON text (see
 # src/models/json_cell.rs), so a decimal wider than an f64 keeps every digit
 # instead of being rounded into a `Value`'s number. Deliberately NOT