diff --git a/kbkdf/Cargo.toml b/kbkdf/Cargo.toml
index 8e86d05..1b159fa 100644
--- a/kbkdf/Cargo.toml
+++ b/kbkdf/Cargo.toml
@@ -13,8 +13,8 @@ readme = "README.md"
 rust-version = "1.65"
 
 [dependencies]
-digest = "0.10"
-hmac = "0.12.1"
+digest = { version = "0.10", default-features = false }
+hmac = { version = "0.12.1", default-features = false }
 # divrem can be dropped with MSRV >= 1.73
 divrem = "1.0.0"