diff --git a/Cargo.lock b/Cargo.lock
index d0a18dde..d5aaac7d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -982,9 +982,9 @@ dependencies = [
 
 [[package]]
 name = "signal-hook"
-version = "0.3.17"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8621587d4798caf8eb44879d42e56b9a93ea5dcd315a6487c357130095b62801"
+checksum = "3b57709da74f9ff9f4a27dce9526eec25ca8407c45a7887243b031a58935fb8e"
 dependencies = [
  "libc",
  "signal-hook-registry",
diff --git a/libshpool/Cargo.toml b/libshpool/Cargo.toml
index 68e603a5..4f4194be 100644
--- a/libshpool/Cargo.toml
+++ b/libshpool/Cargo.toml
@@ -27,7 +27,7 @@ serde_derive = "1" # config parsing, connection header formatting
 serde_json = "1" # JSON output for list command
 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