diff --git a/Cargo.lock b/Cargo.lock
index b0daa660db..4f7206c740 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2555,6 +2555,9 @@ dependencies = [
  "crypto",
  "curve25519-dalek",
  "nymsphinx",
+ "serde",
+ "serde_derive",
+ "serde_json",
  "slice_as_array",
  "sphinx",
  "wasm-bindgen",
@@ -3131,6 +3134,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2cc57ce05287f8376e998cbddfb4c8cb43b84a7ec55cf4551d7c00eef317a47f"
 dependencies = [
  "cfg-if",
+ "serde",
+ "serde_json",
  "wasm-bindgen-macro",
 ]