diff --git a/Cargo.lock b/Cargo.lock
index 141968d98..a7fde0d6f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4131,9 +4131,9 @@ checksum = "43b2853a4d09f215c24cc5489c992ce46052d359b5109343cbafbf26bc62f8a3"
 
 [[package]]
 name = "signal-hook"
-version = "0.2.3"
+version = "0.3.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "844024c8913df6bfbfeee3061075ccc47216a897ac0b54a683dea3dfe16d19af"
+checksum = "9c98891d737e271a2954825ef19e46bd16bdb98e2746f2eec4f7a4ef7946efd1"
 dependencies = [
  "libc",
  "signal-hook-registry",
diff --git a/ledger-tool/Cargo.toml b/ledger-tool/Cargo.toml
index 8f63f5c53..0de8125e2 100644
--- a/ledger-tool/Cargo.toml
+++ b/ledger-tool/Cargo.toml
@@ -41,7 +41,7 @@ tokio = { version = "1", features = ["full"] }
 assert_cmd = "2.0"
 
 [target."cfg(unix)".dependencies]
-signal-hook = "0.2.3"
+signal-hook = "0.3.10"
 
 [package.metadata.docs.rs]
 targets = ["x86_64-unknown-linux-gnu"]
diff --git a/ledger-tool/src/main.rs b/ledger-tool/src/main.rs
index 564f21c95..41c0101fe 100644
--- a/ledger-tool/src/main.rs
+++ b/ledger-tool/src/main.rs
@@ -837,7 +837,7 @@ fn main() {
         // `register()` is unsafe because the action is called in a signal handler
         // with the usual caveats. So long as this action body stays empty, we'll
         // be fine
-        unsafe { signal_hook::register(signal_hook::SIGUSR1, || {}) }.unwrap();
+        unsafe { signal_hook::low_level::register(signal_hook::consts::SIGUSR1, || {}) }.unwrap();
     }
 
     const DEFAULT_ROOT_COUNT: &str = "1";
diff --git a/validator/Cargo.toml b/validator/Cargo.toml
index 09597edcf..d2c08d7ae 100644
--- a/validator/Cargo.toml
+++ b/validator/Cargo.toml
@@ -56,7 +56,7 @@ jemallocator = {package = "tikv-jemallocator", version = "0.4.1", features = ["u
 
 [target."cfg(unix)".dependencies]
 libc = "0.2.105"
-signal-hook = "0.2.3"
+signal-hook = "0.3.10"
 sysctl = "0.4.2"
 
 [package.metadata.docs.rs]
diff --git a/validator/src/lib.rs b/validator/src/lib.rs
index c1cbed35c..0958bcd60 100644
--- a/validator/src/lib.rs
+++ b/validator/src/lib.rs
@@ -55,11 +55,12 @@ pub fn redirect_stderr_to_file(logfile: Option<String>) -> Option<JoinHandle<()>
             #[cfg(unix)]
             {
                 use log::info;
-                let signals = signal_hook::iterator::Signals::new(&[signal_hook::SIGUSR1])
-                    .unwrap_or_else(|err| {
-                        eprintln!("Unable to register SIGUSR1 handler: {:?}", err);
-                        exit(1);
-                    });
+                let mut signals =
+                    signal_hook::iterator::Signals::new(&[signal_hook::consts::SIGUSR1])
+                        .unwrap_or_else(|err| {
+                            eprintln!("Unable to register SIGUSR1 handler: {:?}", err);
+                            exit(1);
+                        });
 
                 solana_logger::setup_with_default(filter);
                 redirect_stderr(&logfile);