diff --git a/Cargo.lock b/Cargo.lock
index 8c31e43..4dcf835 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -90,9 +90,9 @@ checksum = "0d8c1fef690941d3e7788d328517591fecc684c084084702d6ff1641e993699a"
 
 [[package]]
 name = "cc"
-version = "1.1.11"
+version = "1.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5fb8dd288a69fc53a1996d7ecfbf4a20d59065bff137ce7e56bbd620de191189"
+checksum = "68064e60dbf1f17005c2fde4d07c16d8baa506fd7ffed8ccab702d93617975c7"
 dependencies = [
  "shlex",
 ]
@@ -256,9 +256,9 @@ checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
 
 [[package]]
 name = "libc"
-version = "0.2.155"
+version = "0.2.156"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "97b3888a4aecf77e811145cadf6eef5901f4782c53886191b2f693f24761847c"
+checksum = "a5f43f184355eefb8d17fc948dbecf6c13be3c141f20d834ae842193a448c72a"
 
 [[package]]
 name = "libredox"