diff --git a/Cargo.lock b/Cargo.lock
index a4b72245..a94f5679 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -37,7 +37,7 @@ dependencies = [
  "mailparse",
  "maplit",
  "mockito",
- "nix 0.27.1",
+ "nix 0.29.0",
  "openssh-keys",
  "openssl",
  "pnet_base",
@@ -1272,9 +1272,9 @@ dependencies = [
 
 [[package]]
 name = "openssl"
-version = "0.10.66"
+version = "0.10.68"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9529f4786b70a3e8c61e11179af17ab6188ad8d0ded78c5529441ed39d4bd9c1"
+checksum = "6174bc48f102d208783c2c84bf931bb75927a617866870de8a4ea85597f871f5"
 dependencies = [
  "bitflags",
  "cfg-if",
@@ -1304,9 +1304,9 @@ checksum = "ff011a302c396a5197692431fc1948019154afc178baf7d8e37367442a4601cf"
 
 [[package]]
 name = "openssl-sys"
-version = "0.9.103"
+version = "0.9.104"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f9e8deee91df40a943c71b917e5874b951d32a802526c85721ce3b776c929d6"
+checksum = "45abf306cbf99debc8195b66b7346498d7b10c210de50418b5ccd7ceba08c741"
 dependencies = [
  "cc",
  "libc",