diff --git a/Cargo.toml b/Cargo.toml
index 19f1313be..2662d5e81 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,9 +15,9 @@ test = false
 doc = false
 
 [dependencies]
-libc = "0.2.44"
+libc = "0.2"
 lz4-sys = { path = "lz4-sys", version = "1.9.2" }
 
 [dev-dependencies]
-rand = "0.6.1"
+rand = "0.7"
 docmatic = "0.1"