diff --git a/Cargo.toml b/Cargo.toml
index 5e9e1aa..6e558e2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,6 +12,7 @@ crate-type = ["staticlib"]
 [dependencies]
 libc = "0.2"
 getopts = "0.2"
+chrono = "0.4"
 
 [build-dependencies]
 bindgen = "0.53.1"