diff --git a/Cargo.lock b/Cargo.lock
index df61a35..586fd0a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -205,14 +205,16 @@ checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
 
 [[package]]
 name = "chrono"
-version = "0.4.15"
+version = "0.4.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "942f72db697d8767c22d46a598e01f2d3b475501ea43d0db4f16d90259182d0b"
+checksum = "d021fddb7bd3e734370acfa4a83f34095571d8570c039f1420d77540f68d5772"
 dependencies = [
+ "libc",
  "num-integer",
  "num-traits",
  "serde",
  "time",
+ "winapi 0.3.9",
 ]
 
 [[package]]