diff --git a/cggtts/Cargo.toml b/cggtts/Cargo.toml
index 09fb269..54eb62a 100644
--- a/cggtts/Cargo.toml
+++ b/cggtts/Cargo.toml
@@ -30,7 +30,7 @@ hifitime = { version = "4.0", features = ["serde", "std"] }
 polyfit-rs = { version = "0.2", optional = true }
 
 [dev-dependencies]
-rand = "0.8"
+rand = "0.9"
 
 [package.metadata.docs.rs]
 all-features = true