diff --git a/Cargo.lock b/Cargo.lock
index ce10771d8d..a0878a0c32 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3956,9 +3956,9 @@ checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
 
 [[package]]
 name = "libc"
-version = "0.2.153"
+version = "0.2.155"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9c198f91728a82281a64e1f4f9eeb25d82cb32a5de251c6bd1b5154d63a8e7bd"
+checksum = "97b3888a4aecf77e811145cadf6eef5901f4782c53886191b2f693f24761847c"
 
 [[package]]
 name = "libdlpi-sys"
@@ -4024,7 +4024,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0c2a198fb6b0eada2a8df47933734e6d35d350665a33a3593d7164fa52c75c19"
 dependencies = [
  "cfg-if",
- "windows-targets 0.48.5",
+ "windows-targets 0.52.5",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 0065e26618..fc8811e9b5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -306,7 +306,7 @@ ipnetwork = { version = "0.20", features = ["schemars"] }
 ispf = { git = "https://github.com/oxidecomputer/ispf" }
 key-manager = { path = "key-manager" }
 kstat-rs = "0.2.3"
-libc = "0.2.153"
+libc = "0.2.155"
 libfalcon = { git = "https://github.com/oxidecomputer/falcon", rev = "e69694a1f7cc9fe31fab27f321017280531fb5f7" }
 libnvme = { git = "https://github.com/oxidecomputer/libnvme", rev = "6fffcc81d2c423ed2d2e6c5c2827485554c4ecbe" }
 linear-map = "1.2.0"
diff --git a/workspace-hack/Cargo.toml b/workspace-hack/Cargo.toml
index ab5d08d711..ee4dcccb70 100644
--- a/workspace-hack/Cargo.toml
+++ b/workspace-hack/Cargo.toml
@@ -68,7 +68,7 @@ itertools-5ef9efb8ec2df382 = { package = "itertools", version = "0.12.1" }
 itertools-93f6ce9d446188ac = { package = "itertools", version = "0.10.5" }
 lalrpop-util = { version = "0.19.12" }
 lazy_static = { version = "1.4.0", default-features = false, features = ["spin_no_std"] }
-libc = { version = "0.2.153", features = ["extra_traits"] }
+libc = { version = "0.2.155", features = ["extra_traits"] }
 log = { version = "0.4.21", default-features = false, features = ["std"] }
 managed = { version = "0.8.0", default-features = false, features = ["alloc", "map"] }
 memchr = { version = "2.7.2" }
@@ -173,7 +173,7 @@ itertools-5ef9efb8ec2df382 = { package = "itertools", version = "0.12.1" }
 itertools-93f6ce9d446188ac = { package = "itertools", version = "0.10.5" }
 lalrpop-util = { version = "0.19.12" }
 lazy_static = { version = "1.4.0", default-features = false, features = ["spin_no_std"] }
-libc = { version = "0.2.153", features = ["extra_traits"] }
+libc = { version = "0.2.155", features = ["extra_traits"] }
 log = { version = "0.4.21", default-features = false, features = ["std"] }
 managed = { version = "0.8.0", default-features = false, features = ["alloc", "map"] }
 memchr = { version = "2.7.2" }