diff --git a/Cargo.lock b/Cargo.lock
index 7d5854a..25bb526 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -815,9 +815,9 @@ checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
 
 [[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"
diff --git a/netwatch/Cargo.toml b/netwatch/Cargo.toml
index 9492558..8eda902 100644
--- a/netwatch/Cargo.toml
+++ b/netwatch/Cargo.toml
@@ -35,7 +35,7 @@ tracing = "0.1"
 # non-browser dependencies
 [target.'cfg(not(all(target_family = "wasm", target_os = "unknown")))'.dependencies]
 quinn-udp = { package = "iroh-quinn-udp", version = "0.8" }
-libc = "0.2.139"
+libc = "0.2.181"
 netdev = "0.40.0"
 socket2 = { version = "0.6", features = ["all"] }
 tokio = { version = "1", features = [
diff --git a/portmapper/Cargo.toml b/portmapper/Cargo.toml
index 1a89b75..ddcdce8 100644
--- a/portmapper/Cargo.toml
+++ b/portmapper/Cargo.toml
@@ -23,7 +23,7 @@ futures-lite = "2.5"
 futures-util = "0.3.25"
 igd-next = { version = "0.16.1", features = ["aio_tokio"] }
 iroh-metrics = { version = "0.38", default-features = false }
-libc = "0.2.139"
+libc = "0.2.181"
 netwatch = { version = "0.14.0", path = "../netwatch" }
 n0-error = "0.1.2"
 num_enum = "0.7"