diff --git a/library/stdarch/crates/stdsimd/Cargo.toml b/library/stdarch/crates/stdsimd/Cargo.toml
index 328229ba8a4c..97e07d0ca7ed 100644
--- a/library/stdarch/crates/stdsimd/Cargo.toml
+++ b/library/stdarch/crates/stdsimd/Cargo.toml
@@ -26,7 +26,7 @@ cfg-if = "0.1"
 [dev-dependencies]
 auxv = "0.3.3"
 quickcheck = "0.6"
-rand = "0.4"
+rand = "0.5"
 cupid = "0.5.0"
 
 [[example]]