diff --git a/Cargo.lock b/Cargo.lock
index 068429897c..d799847006 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -7464,7 +7464,7 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf2890aaef0aa82719a50e808de264f9484b74b442e1a3a0e5ee38243ac40bdb"
 dependencies = [
- "rand_core 0.5.1",
+ "rand_core 0.6.4",
 ]
 
 [[package]]