diff --git a/fuzz/Cargo.lock b/fuzz/Cargo.lock
index c32550952..710961a42 100644
--- a/fuzz/Cargo.lock
+++ b/fuzz/Cargo.lock
@@ -337,9 +337,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.99"
+version = "0.2.100"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a7f823d141fe0a24df1e23b4af4e3c7ba9e5966ec514ea068c93024aa7deb765"
+checksum = "a1fa8cddc8fbbee11227ef194b5317ed014b8acbf15139bd716a18ad3fe99ec5"
 
 [[package]]
 name = "libfuzzer-sys"
diff --git a/fuzz/Cargo.toml b/fuzz/Cargo.toml
index c193e97d1..37ae670b8 100644
--- a/fuzz/Cargo.toml
+++ b/fuzz/Cargo.toml
@@ -10,7 +10,7 @@ cargo-fuzz = true
 
 [dependencies]
 block_util = { path = "../block_util" }
-libc = "0.2.99"
+libc = "0.2.100"
 libfuzzer-sys = "0.4.2"
 qcow = { path = "../qcow" }
 seccompiler = { git = "https://github.com/rust-vmm/seccompiler"}