diff --git a/indy-data-types/Cargo.toml b/indy-data-types/Cargo.toml
index 50813d5..2d680e5 100644
--- a/indy-data-types/Cargo.toml
+++ b/indy-data-types/Cargo.toml
@@ -30,7 +30,9 @@ vendored = ["anoncreds-clsignatures?/openssl_vendored"]
 anoncreds-clsignatures = { version = "0.2", optional = true }
 bs58 = "0.5"
 curve25519-dalek = { version = "4.1", default-features = false, optional = true }
-ed25519-dalek = { version = "2.0", default-features = false, optional = true }
+ed25519-dalek = { version = "2.0", default-features = false, features = [
+    "zeroize",
+], optional = true }
 hex = { version = "0.4", optional = true }
 once_cell = "1"
 rand = { version = "0.8", optional = true }
@@ -41,6 +43,7 @@ sha2 = { version = "0.10", optional = true }
 thiserror = "1"
 x25519-dalek = { version = "2.0", default-features = false, optional = true, features = [
     "static_secrets",
+    "zeroize",
 ] }
 zeroize = { version = "1", features = ["zeroize_derive"] }