diff --git a/Cargo.lock b/Cargo.lock
index 49b17efe4..c7b377f9a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -779,7 +779,7 @@ dependencies = [
  "serde_json 1.0.39 (registry+https://github.com/rust-lang/crates.io-index)",
  "siphasher 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "uuid 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "zeroize 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zeroize 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -801,7 +801,7 @@ dependencies = [
  "serde_json 1.0.39 (registry+https://github.com/rust-lang/crates.io-index)",
  "sha2 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "uuid 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "zeroize 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zeroize 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -857,7 +857,7 @@ dependencies = [
  "rustc-serialize 0.3.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.93 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.39 (registry+https://github.com/rust-lang/crates.io-index)",
- "zeroize 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zeroize 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -928,7 +928,7 @@ dependencies = [
  "serde 1.0.93 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.93 (registry+https://github.com/rust-lang/crates.io-index)",
  "walkdir 2.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "zeroize 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zeroize 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "zip 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2700,15 +2700,15 @@ dependencies = [
 
 [[package]]
 name = "zeroize"
-version = "0.9.1"
+version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "zeroize_derive 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zeroize_derive 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "zeroize_derive"
-version = "0.9.0"
+version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3005,6 +3005,6 @@ dependencies = [
 "checksum xi-unicode 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "12ea8eda4b1eb72f02d148402e23832d56a33f55d8c1b2d5bcdde91d79d47cb1"
 "checksum yaml-rust 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "e66366e18dc58b46801afbf2ca7661a9f59cc8c5962c29892b6039b4f86fa992"
 "checksum yaml-rust 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "65923dd1784f44da1d2c3dbbc5e822045628c590ba72123e1c73d3c230c4434d"
-"checksum zeroize 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5e2ea4afc22e9497e26b42bf047083c30f7e3ca566f3bcd7187f83d18b327043"
-"checksum zeroize_derive 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "afd1469e4bbca3b96606d26ba6e9bd6d3aed3b1299c82b92ec94377d22d78dbc"
+"checksum zeroize 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)" = "45af6a010d13e4cf5b54c94ba5a2b2eba5596b9e46bf5875612d332a1f2b3f86"
+"checksum zeroize_derive 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)" = "080616bd0e31f36095288bb0acdf1f78ef02c2fa15527d7e993f2a6c7591643e"
 "checksum zip 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c18fc320faf909036e46ac785ea827f72e485304877faf1a3a39538d3714dbc3"