diff --git a/Cargo.lock b/Cargo.lock
index a93aa044..34749262 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -15,7 +15,7 @@ dependencies = [
  "maplit",
  "mime",
  "mockito",
- "nix",
+ "nix 0.18.0",
  "openssh-keys",
  "openssl",
  "pnet_base",
@@ -703,9 +703,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.70"
+version = "0.2.73"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3baa92041a6fec78c687fa0cc2b3fae8884f743d672cf551bed1d6dac6988d0f"
+checksum = "bd7d4bd64732af4bf3a67f367c27df8520ad7e230c5817b8ff485864d80242b9"
 
 [[package]]
 name = "libsystemd"
@@ -716,7 +716,7 @@ dependencies = [
  "error-chain",
  "hmac",
  "libc",
- "nix",
+ "nix 0.17.0",
  "serde",
  "sha2 0.8.1",
  "uuid",
@@ -885,6 +885,18 @@ dependencies = [
  "void",
 ]
 
+[[package]]
+name = "nix"
+version = "0.18.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "83450fe6a6142ddd95fb064b746083fc4ef1705fe81f64a64e1d4b39f54a1055"
+dependencies = [
+ "bitflags",
+ "cc",
+ "cfg-if",
+ "libc",
+]
+
 [[package]]
 name = "num-integer"
 version = "0.1.42"
diff --git a/Cargo.toml b/Cargo.toml
index b85e4350..af32e51d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -35,7 +35,7 @@ ipnetwork = "^0.17"
 libsystemd = "^0.2.1"
 maplit = "^1.0"
 mime = "^0.3"
-nix = "^0.17"
+nix = "^0.18"
 openssh-keys = "^0.4"
 openssl = "^0.10"
 pnet_base = "^0.26"