diff --git a/Cargo.lock b/Cargo.lock
index 69b47c59326f6..d025914f7d69c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1861,9 +1861,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.85"
+version = "0.2.88"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7ccac4b00700875e6a07c6cde370d44d32fa01c5a65cdd2fca6858c479d28bb3"
+checksum = "03b07a082330a35e43f63177cc01689da34fbffa0105e1246cf0311472cac73a"
 
 [[package]]
 name = "libm"
diff --git a/src/materialized/Cargo.toml b/src/materialized/Cargo.toml
index 023e807c189dc..29b5ae2e55b0d 100644
--- a/src/materialized/Cargo.toml
+++ b/src/materialized/Cargo.toml
@@ -48,7 +48,7 @@ include_dir = "0.6.0"
 itertools = "0.9.0"
 krb5-src = { version = "0.2.3", features = ["binaries"] }
 lazy_static = "1.4.0"
-libc = "0.2.85"
+libc = "0.2.88"
 log = "0.4.13"
 mz-process-collector = { path = "../mz-process-collector" }
 nix = "0.19.1"
diff --git a/src/mz-process-collector/Cargo.toml b/src/mz-process-collector/Cargo.toml
index 01931921b44c3..016ce42470794 100644
--- a/src/mz-process-collector/Cargo.toml
+++ b/src/mz-process-collector/Cargo.toml
@@ -6,7 +6,7 @@ publish = false
 
 [dependencies]
 lazy_static = "1.4.0"
-libc = "0.2.85"
+libc = "0.2.88"
 prometheus = { git = "https://github.com/MaterializeInc/rust-prometheus.git", default-features = false }
 
 [target.'cfg(target_os = "linux")'.dependencies]
diff --git a/src/ore/Cargo.toml b/src/ore/Cargo.toml
index 0e62407fb85f5..6bfe31e2942b6 100644
--- a/src/ore/Cargo.toml
+++ b/src/ore/Cargo.toml
@@ -11,7 +11,7 @@ bytes = "1.0.1"
 fallible-iterator = "0.2.0"
 futures = "0.3.12"
 lazy_static = "1.4.0"
-libc = "0.2.85"
+libc = "0.2.88"
 log = "0.4.13"
 openssl = { version = "0.10.32", features = ["vendored"] }
 phf_shared = "0.8.0"