diff --git a/Cargo.toml b/Cargo.toml
index 7c3bb40..592d627 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -64,12 +64,12 @@ alloc = [
     "curve25519-dalek/alloc",
     "rand_core/alloc",
     "getrandom_or_panic/alloc",
-    "serde_bytes/alloc",
+    "serde_bytes?/alloc",
 ]
 std = [
     "alloc",
     "getrandom",
-    "serde_bytes/std",
+    "serde_bytes?/std",
     "rand_core/std",
     "getrandom_or_panic/std",
     "chacha20poly1305/std",