diff --git a/Cargo.lock b/Cargo.lock
index 2c6e5802a..f6734be74 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -336,11 +336,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "getrandom"
-version = "0.1.8"
+version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.61 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasi 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -707,7 +708,7 @@ name = "rand"
 version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "getrandom 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "getrandom 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.61 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_chacha 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -741,7 +742,7 @@ name = "rand_core"
 version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "getrandom 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "getrandom 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1189,6 +1190,11 @@ dependencies = [
  "libc 0.2.61 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "wasi"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "winapi"
 version = "0.2.8"
@@ -1263,7 +1269,7 @@ dependencies = [
 "checksum failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "795bd83d3abeb9220f257e597aa0080a508b27533824adf336529648f6abf7e2"
 "checksum failure_derive 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "ea1063915fd7ef4309e222a5a07cf9c319fb9c7836b1f89b85458672dbb127e1"
 "checksum fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a06f77d526c1a601b7c4cdd98f54b5eaabffc14d5f2f0296febdc7f357c6d3ba"
-"checksum getrandom 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "34f33de6f0ae7c9cb5e574502a562e2b512799e32abb801cd1e79ad952b62b49"
+"checksum getrandom 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "2512b3191f22e2763a5db387f1c9409379772e2050841722eb4a8c4f497bf096"
 "checksum glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "8be18de09a56b60ed0edf84bc9df007e30040691af7acd1c41874faac5895bfb"
 "checksum ipnetwork 0.14.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b3d862c86f7867f19b693ec86765e0252d82e53d4240b9b629815675a0714ad1"
 "checksum itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)" = "501266b7edd0174f8530248f87f99c88fbe60ca4ef3dd486835b8d8d53136f7f"
@@ -1351,6 +1357,7 @@ dependencies = [
 "checksum vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a"
 "checksum vm-memory 0.1.0 (git+https://github.com/rust-vmm/vm-memory)" = "<none>"
 "checksum vmm-sys-util 0.1.0 (git+https://github.com/rust-vmm/vmm-sys-util)" = "<none>"
+"checksum wasi 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fd5442abcac6525a045cc8c795aedb60da7a2e5e89c7bf18a0d5357849bb23c7"
 "checksum winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
 "checksum winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "f10e386af2b13e47c89e7236a7a14a086791a2b88ebad6df9bf42040195cf770"
 "checksum winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"