diff --git a/Cargo.lock b/Cargo.lock
index f70aecd..84a0577 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -40,6 +40,6 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.150"
+version = "0.2.174"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89d92a4743f9a61002fae18374ed11e7973f530cb3a3255fb354818118b2203c"
+checksum = "1171693293099992e19cddea4e8b849964e9846f4acee11b3948bcc337be8776"