diff --git a/hphp/hack/src/hackc/ffi_bridge/Cargo.toml b/hphp/hack/src/hackc/ffi_bridge/Cargo.toml
index 945972f88520bc..137dad5d2f16e0 100644
--- a/hphp/hack/src/hackc/ffi_bridge/Cargo.toml
+++ b/hphp/hack/src/hackc/ffi_bridge/Cargo.toml
@@ -21,7 +21,7 @@ facts = { version = "0.0.0", path = "../facts/cargo/facts_rust" }
 hash = { version = "0.0.0", path = "../../utils/hash" }
 hhbc = { version = "0.0.0", path = "../hhbc/cargo/hhbc" }
 hhbc_string_utils = { version = "0.0.0", path = "../utils/cargo/hhbc_string_utils" }
-libc = "0.2.139"
+libc = "0.2.149"
 options = { version = "0.0.0", path = "../compile/cargo/options" }
 oxidized = { version = "0.0.0", path = "../../oxidized" }
 oxidized_by_ref = { version = "0.0.0", path = "../../oxidized_by_ref" }
diff --git a/hphp/hack/src/hackc/utils/cargo/hhbc_string_utils/Cargo.toml b/hphp/hack/src/hackc/utils/cargo/hhbc_string_utils/Cargo.toml
index 3ed319fda90a67..a1bfc5a8f32e9d 100644
--- a/hphp/hack/src/hackc/utils/cargo/hhbc_string_utils/Cargo.toml
+++ b/hphp/hack/src/hackc/utils/cargo/hhbc_string_utils/Cargo.toml
@@ -12,7 +12,7 @@ path = "../../string_utils.rs"
 bstr = { version = "1.4.0", features = ["serde", "std", "unicode"] }
 escaper = { version = "0.0.0", path = "../../../../utils/escaper" }
 lazy_static = "1.4"
-libc = "0.2.139"
+libc = "0.2.149"
 naming_special_names_rust = { version = "0.0.0", path = "../../../../naming" }
 ocaml_helper = { version = "0.0.0", path = "../../../../utils/ocaml_helper" }
 regex = "1.9.2"
diff --git a/hphp/hack/src/hh_fanout/cargo/hh_fanout_build/Cargo.toml b/hphp/hack/src/hh_fanout/cargo/hh_fanout_build/Cargo.toml
index 945a8015b62fcb..35869ffacaa2de 100644
--- a/hphp/hack/src/hh_fanout/cargo/hh_fanout_build/Cargo.toml
+++ b/hphp/hack/src/hh_fanout/cargo/hh_fanout_build/Cargo.toml
@@ -18,7 +18,7 @@ depgraph_compress = { version = "0.0.0", path = "../../../depgraph/depgraph_comp
 depgraph_reader = { version = "0.0.0", path = "../../../depgraph/cargo/depgraph_reader" }
 depgraph_writer = { version = "0.0.0", path = "../../../depgraph/cargo/depgraph_writer" }
 hash = { version = "0.0.0", path = "../../../utils/hash" }
-libc = "0.2.139"
+libc = "0.2.149"
 log = { version = "0.4.17", features = ["kv_unstable", "kv_unstable_std"] }
 memmap2 = "0.5.10"
 newtype = { version = "0.0.0", path = "../../../utils/newtype" }
diff --git a/hphp/hack/src/naming/cargo/naming_table_rust/Cargo.toml b/hphp/hack/src/naming/cargo/naming_table_rust/Cargo.toml
index 4c5286acf3c34c..c69e5044accf55 100644
--- a/hphp/hack/src/naming/cargo/naming_table_rust/Cargo.toml
+++ b/hphp/hack/src/naming/cargo/naming_table_rust/Cargo.toml
@@ -25,7 +25,7 @@ shm_store = { version = "0.0.0", path = "../../../shmffi/cargo/shm_store" }
 
 [dev-dependencies]
 hh24_test = { version = "0.0.0", path = "../../../utils/cargo/hh24_test" }
-libc = "0.2.139"
+libc = "0.2.149"
 maplit = "1.0"
 rpds = "0.11.0"
 shmffi = { version = "0.0.0", path = "../../../shmffi/cargo/shmffi" }
diff --git a/hphp/hack/src/shmffi/cargo/ocaml_blob/Cargo.toml b/hphp/hack/src/shmffi/cargo/ocaml_blob/Cargo.toml
index 22b9bff60cf26f..12e8de8efc6730 100644
--- a/hphp/hack/src/shmffi/cargo/ocaml_blob/Cargo.toml
+++ b/hphp/hack/src/shmffi/cargo/ocaml_blob/Cargo.toml
@@ -10,7 +10,7 @@ path = "../../ocaml_blob.rs"
 crate-type = ["lib", "staticlib"]
 
 [dependencies]
-libc = "0.2.139"
+libc = "0.2.149"
 lz4 = "1.24.0"
 ocamlrep = { version = "0.1.0", git = "https://github.com/facebook/ocamlrep/", branch = "main" }
 shmrs = { version = "0.0.0", path = "../../../shmrs" }
diff --git a/hphp/hack/src/shmffi/cargo/shmffi/Cargo.toml b/hphp/hack/src/shmffi/cargo/shmffi/Cargo.toml
index 0a65f200bb3b22..4b810d8ffe1f65 100644
--- a/hphp/hack/src/shmffi/cargo/shmffi/Cargo.toml
+++ b/hphp/hack/src/shmffi/cargo/shmffi/Cargo.toml
@@ -12,7 +12,7 @@ doctest = false
 crate-type = ["lib", "staticlib"]
 
 [dependencies]
-libc = "0.2.139"
+libc = "0.2.149"
 ocaml_blob = { version = "0.0.0", path = "../ocaml_blob" }
 ocamlrep = { version = "0.1.0", git = "https://github.com/facebook/ocamlrep/", branch = "main" }
 ocamlrep_ocamlpool = { version = "0.1.0", git = "https://github.com/facebook/ocamlrep/", branch = "main" }
diff --git a/hphp/hack/src/shmrs/Cargo.toml b/hphp/hack/src/shmrs/Cargo.toml
index 6de146a97de01c..7215baa8351571 100644
--- a/hphp/hack/src/shmrs/Cargo.toml
+++ b/hphp/hack/src/shmrs/Cargo.toml
@@ -10,7 +10,7 @@ path = "shmrs.rs"
 
 [dependencies]
 hashbrown = { version = "0.12.3", features = ["nightly", "raw", "serde"] }
-libc = "0.2.139"
+libc = "0.2.149"
 nohash-hasher = "0.2"
 static_assertions = "1.1.0"
 
diff --git a/hphp/hack/src/utils/perf/cargo/profile/Cargo.toml b/hphp/hack/src/utils/perf/cargo/profile/Cargo.toml
index 5e18ef9c86ef56..b4ff4f7b6fdbdd 100644
--- a/hphp/hack/src/utils/perf/cargo/profile/Cargo.toml
+++ b/hphp/hack/src/utils/perf/cargo/profile/Cargo.toml
@@ -9,4 +9,4 @@ edition = "2021"
 path = "../../profile.rs"
 
 [dependencies]
-libc = "0.2.139"
+libc = "0.2.149"
diff --git a/hphp/hack/src/utils/rust/file_rwlock/Cargo.toml b/hphp/hack/src/utils/rust/file_rwlock/Cargo.toml
index 957edc19b6dc30..3ae83c266cd74d 100644
--- a/hphp/hack/src/utils/rust/file_rwlock/Cargo.toml
+++ b/hphp/hack/src/utils/rust/file_rwlock/Cargo.toml
@@ -11,7 +11,7 @@ path = "../file_rwlock.rs"
 [dependencies]
 anyhow = "=1.0.72"
 fs2 = "0.4"
-libc = "0.2.139"
+libc = "0.2.149"
 serde = { version = "1.0.185", features = ["derive", "rc"] }
 serde_json = { version = "1.0.100", features = ["float_roundtrip", "unbounded_depth"] }
 tempfile = "3.8"
diff --git a/hphp/hack/src/utils/unwrap_ocaml/Cargo.toml b/hphp/hack/src/utils/unwrap_ocaml/Cargo.toml
index eb4a6df1b33455..6ed9373e2aa968 100644
--- a/hphp/hack/src/utils/unwrap_ocaml/Cargo.toml
+++ b/hphp/hack/src/utils/unwrap_ocaml/Cargo.toml
@@ -11,4 +11,4 @@ test = false
 doctest = false
 
 [dependencies]
-libc = "0.2.139"
+libc = "0.2.149"