diff --git a/Cargo.lock b/Cargo.lock
index 5cf19bf0..4fa214f1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -981,9 +981,9 @@ dependencies = [
 
 [[package]]
 name = "signal-hook"
-version = "0.3.17"
+version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8621587d4798caf8eb44879d42e56b9a93ea5dcd315a6487c357130095b62801"
+checksum = "2a37d01603c37b5466f808de79f845c7116049b0579adb70a6b7d47c1fa3a952"
 dependencies = [
  "libc",
  "signal-hook-registry",
diff --git a/libshpool/Cargo.toml b/libshpool/Cargo.toml
index 265c8395..7b88e466 100644
--- a/libshpool/Cargo.toml
+++ b/libshpool/Cargo.toml
@@ -26,7 +26,7 @@ serde = "1" # config parsing, connection header formatting
 serde_derive = "1" # config parsing, connection header formatting
 toml = "0.8" # config parsing
 byteorder = "1" # endianness
-signal-hook = "0.3" # signal handling
+signal-hook = "0.4" # signal handling
 shpool_pty = "0.3.1" # spawning shells in ptys
 lazy_static = "1" # globals
 crossbeam-channel = "0.5" # channels