diff --git a/Cargo.toml b/Cargo.toml
index fb908e1..e3a1e7b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -42,6 +42,7 @@ version = "0.7"
 [dependencies.subtle]
 version = "0.5"
 default-features = false
+features = ["generic-impls"]
 
 [dependencies.clear_on_drop]
 version = "=0.2.3"