diff --git a/Cargo.toml b/Cargo.toml
index f2ed0b0684..2069218495 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,13 +21,13 @@ void = "1.0.2"
 cc = "1"
 
 [dev-dependencies]
-bytes = "0.4.8"
+bytes = "0.4"
 lazy_static = "1"
 rand = "0.5"
 tempfile = "3"
 
 [target.'cfg(target_os = "freebsd")'.dev-dependencies]
-sysctl = "0.1"
+sysctl = "0.2"
 
 [[test]]
 name = "test"