diff --git a/Cargo.toml b/Cargo.toml
index d6b597a..6f0f880 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,7 +24,7 @@ swizzle = []
 approx = "0.1"
 mint = { version = "0.4.1", optional = true }
 num-traits = "0.1"
-rand = "0.3"
+rand = "0.4"
 serde = { version = "1.0", features = ["serde_derive"], optional = true }
 simd = { version = "0.2", optional = true }