diff --git a/Cargo.lock b/Cargo.lock
index 8271b402..858cf076 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -477,9 +477,9 @@ checksum = "f8fadd59c855ef2080decdef8ff161eb6661b86933c9d82e5ba29dc602a55aba"
 
 [[package]]
 name = "signal-hook"
-version = "0.4.5"
+version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b29ffa27d3d59a049bb328258de100f8012848d1b08d444e08bbc02ac468435e"
+checksum = "49f7447afd772ca79ad17ae0a3972a6b0df0cb4b80990fd82707593e9e012a74"
 dependencies = [
  "libc",
  "signal-hook-registry",
diff --git a/xtask/Cargo.toml b/xtask/Cargo.toml
index bfedb81c..72fa2b89 100644
--- a/xtask/Cargo.toml
+++ b/xtask/Cargo.toml
@@ -43,7 +43,7 @@ serde = { version = "=1.0.229", default-features = false, features = ["std"], op
 # Typed JSON admission checks the committed documentation-tool lock graph.
 serde_json = { version = "=1.0.154", default-features = false, features = ["std"], optional = true }
 # Safe self-pipe delivery forwards terminal signals to active child groups.
-signal-hook = { version = "=0.4.5", default-features = false, features = ["iterator"], optional = true }
+signal-hook = { version = "=0.4.6", default-features = false, features = ["iterator"], optional = true }
 # Pure Rust YAML admission identifies executable GitHub Actions steps.
 yaml-rust2 = { version = "=0.13.0", default-features = false, optional = true }