diff --git a/zvariant/Cargo.toml b/zvariant/Cargo.toml
index 62b0313ef..5ae1dab87 100644
--- a/zvariant/Cargo.toml
+++ b/zvariant/Cargo.toml
@@ -31,7 +31,7 @@ static_assertions = "1.1.0"
 uuid = { version = "1.2.1", features = ["serde"], optional = true }
 url = { version = "2.3.1", features = ["serde"], optional = true }
 time = { version = "0.3.16", features = ["serde"], optional = true }
-chrono = { version = "0.4.23", features = [
+chrono = { version = "0.4.34", features = [
     "serde",
 ], default-features = false, optional = true }