--- a/Cargo.toml
+++ b/Cargo.toml
@@ -287,4 +287,4 @@
 [dev-dependencies.rand]
-version = "0.9"
-features = ["small_rng"]
+version = "0.10"
+#features = ["small_rng"] # Debian: 0.10 made SmallRng default
 
