diff --git a/validation/local_ping_pong_openssl/Cargo.lock b/validation/local_ping_pong_openssl/Cargo.lock
index f9c581d..e09536f 100644
--- a/validation/local_ping_pong_openssl/Cargo.lock
+++ b/validation/local_ping_pong_openssl/Cargo.lock
@@ -494,9 +494,9 @@ checksum = "09edd9e8b54e49e587e4f6295a7d29c3ea94d469cb40ab8ca70b288248a81db2"
 
 [[package]]
 name = "libc"
-version = "0.2.180"
+version = "0.2.181"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bcc35a38544a891a5f7c865aca548a982ccb3b8650a5b06d0fd33a10283c56fc"
+checksum = "459427e2af2b9c839b132acb702a1c654d95e10f8c326bfc2ad11310e458b1c5"
 
 [[package]]
 name = "libm"