diff --git a/Cargo.toml b/Cargo.toml
index 6d97419..7957d75 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,7 +11,7 @@ edition = "2018"
 
 [dependencies]
 nom = { version = "7", optional = true }
-chrono = { version = "0.4" }
+chrono = { version = "0.4", default-features = false, features = [ "std" ] }
 
 [features]
 default = ["parser"]