diff --git a/test/Cargo.toml b/test/Cargo.toml
index a2f3747..5ec19a9 100644
--- a/test/Cargo.toml
+++ b/test/Cargo.toml
@@ -4,7 +4,7 @@ name = "wee_alloc_test"
 version = "0.1.0"
 
 [dependencies]
-rand = "0.4.2"
+rand = "0.5.5"
 quickcheck = "0.6.0"
 histo = "0.1.0"
 cfg-if = "0.1.2"