diff --git a/Cargo.toml b/Cargo.toml
index ca86d5e..0582abf 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,8 +19,8 @@ serde = { package = "serde", version = "1.0", optional = true, features = ["deri
 
 [dev-dependencies]
 approx = "0.5.1"
-rand = "0.7.2"
-rand_distr = "0.2.2"
+rand = "0.8.5"
+rand_distr = "0.4.3"
 
 [features]
 use_serde = ["serde", "serde/derive"]