diff --git a/x25519/dalek-wrapper/Cargo.lock b/x25519/dalek-wrapper/Cargo.lock
index a9a5652..b80569b 100644
--- a/x25519/dalek-wrapper/Cargo.lock
+++ b/x25519/dalek-wrapper/Cargo.lock
@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "byteorder"
 version = "1.4.3"
@@ -296,9 +298,9 @@ dependencies = [
 
 [[package]]
 name = "zeroize_derive"
-version = "1.1.0"
+version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2c1e130bebaeab2f23886bf9acbaca14b092408c452543c857f66399cd6dab1"
+checksum = "3f8f187641dad4f680d25c4bfc4225b418165984179f26ca76ec4fb6441d3a17"
 dependencies = [
  "proc-macro2",
  "quote",