diff --git a/Cargo.lock b/Cargo.lock
index 8130b42..f631aa1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -817,9 +817,9 @@ dependencies = [
 
 [[package]]
 name = "signal-hook"
-version = "0.4.1"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2a37d01603c37b5466f808de79f845c7116049b0579adb70a6b7d47c1fa3a952"
+checksum = "3b57709da74f9ff9f4a27dce9526eec25ca8407c45a7887243b031a58935fb8e"
 dependencies = [
  "libc",
  "signal-hook-registry",