diff --git a/Cargo.lock b/Cargo.lock
index 47987733db..11e099e0cd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1992,9 +1992,9 @@ checksum = "b294d6fa9ee409a054354afc4352b0b9ef7ca222c69b8812cbea9e7d2bf3783f"
 
 [[package]]
 name = "libc"
-version = "0.2.80"
+version = "0.2.81"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4d58d1b70b004888f764dfbf6a26a3b0342a1632d33968e4a179d8011c760614"
+checksum = "1482821306169ec4d07f6aca392a4681f66c75c9918aa49641a2595db64053cb"
 
 [[package]]
 name = "libloading"
diff --git a/ledger/Cargo.toml b/ledger/Cargo.toml
index be7a2d74e7..00a611b020 100644
--- a/ledger/Cargo.toml
+++ b/ledger/Cargo.toml
@@ -21,7 +21,7 @@ futures = "0.3.8"
 futures-util = "0.3.5"
 itertools = "0.9.0"
 lazy_static = "1.4.0"
-libc = "0.2.72"
+libc = "0.2.81"
 log = { version = "0.4.8" }
 num_cpus = "1.13.0"
 prost = "0.6.1"
diff --git a/programs/bpf/Cargo.lock b/programs/bpf/Cargo.lock
index b8f3aeaf25..08ca9a0b84 100644
--- a/programs/bpf/Cargo.lock
+++ b/programs/bpf/Cargo.lock
@@ -1028,9 +1028,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.72"
+version = "0.2.81"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a9f8082297d534141b30c8d39e9b1773713ab50fdbe4ff30f750d063b3bfd701"
+checksum = "1482821306169ec4d07f6aca392a4681f66c75c9918aa49641a2595db64053cb"
 
 [[package]]
 name = "libloading"
diff --git a/runtime/Cargo.toml b/runtime/Cargo.toml
index 159df6f879..8b4d8124dd 100644
--- a/runtime/Cargo.toml
+++ b/runtime/Cargo.toml
@@ -22,7 +22,7 @@ fnv = "1.0.7"
 fs_extra = "1.1.0"
 itertools = "0.9.0"
 lazy_static = "1.4.0"
-libc = "0.2.72"
+libc = "0.2.81"
 libloading = "0.6.2"
 log = "0.4.8"
 memmap2 = "0.1.0"
diff --git a/storage-bigtable/build-proto/Cargo.lock b/storage-bigtable/build-proto/Cargo.lock
index d34fa6a2aa..bd8bce74ac 100644
--- a/storage-bigtable/build-proto/Cargo.lock
+++ b/storage-bigtable/build-proto/Cargo.lock
@@ -86,9 +86,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.73"
+version = "0.2.81"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bd7d4bd64732af4bf3a67f367c27df8520ad7e230c5817b8ff485864d80242b9"
+checksum = "1482821306169ec4d07f6aca392a4681f66c75c9918aa49641a2595db64053cb"
 
 [[package]]
 name = "log"
diff --git a/storage-proto/build-proto/Cargo.lock b/storage-proto/build-proto/Cargo.lock
index 93f0ee7f05..ee293656cd 100644
--- a/storage-proto/build-proto/Cargo.lock
+++ b/storage-proto/build-proto/Cargo.lock
@@ -83,9 +83,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.79"
+version = "0.2.81"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2448f6066e80e3bfc792e9c98bf705b4b0fc6e8ef5b43e5889aff0eaa9c58743"
+checksum = "1482821306169ec4d07f6aca392a4681f66c75c9918aa49641a2595db64053cb"
 
 [[package]]
 name = "log"
diff --git a/streamer/Cargo.toml b/streamer/Cargo.toml
index c5932b3652..014332a707 100644
--- a/streamer/Cargo.toml
+++ b/streamer/Cargo.toml
@@ -15,7 +15,7 @@ solana-sdk = { path = "../sdk", version = "1.5.0" }
 thiserror = "1.0"
 solana-measure = { path = "../measure", version = "1.5.0" }
 solana-logger = { path = "../logger", version = "1.5.0" }
-libc = "0.2.72"
+libc = "0.2.81"
 nix = "0.19.0"
 solana-perf = { path = "../perf", version = "1.5.0" }
 
diff --git a/sys-tuner/Cargo.toml b/sys-tuner/Cargo.toml
index 1ea1a7f2fc..13801ee1ca 100644
--- a/sys-tuner/Cargo.toml
+++ b/sys-tuner/Cargo.toml
@@ -12,7 +12,7 @@ publish = true
 [dependencies]
 clap = "2.33.1"
 log = "0.4.8"
-libc = "0.2.72"
+libc = "0.2.81"
 solana-clap-utils = { path = "../clap-utils", version = "1.5.0" }
 solana-logger = { path = "../logger", version = "1.5.0" }
 solana-version = { path = "../version", version = "1.5.0" }
diff --git a/validator/Cargo.toml b/validator/Cargo.toml
index af7ff7843d..6ab885aba0 100644
--- a/validator/Cargo.toml
+++ b/validator/Cargo.toml
@@ -35,7 +35,7 @@ solana-vote-program = { path = "../programs/vote", version = "1.5.0" }
 symlink = "0.1.0"
 
 [target."cfg(unix)".dependencies]
-libc = "0.2.72"
+libc = "0.2.81"
 signal-hook = "0.1.15"
 
 [package.metadata.docs.rs]