diff --git a/Cargo.lock b/Cargo.lock
index bb75185..4869208 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -9,7 +9,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e01ed3140b2f8d422c68afa1ed2e85d996ea619c988ac834d255db32138655cb"
 dependencies = [
  "quote",
- "syn 2.0.53",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -467,7 +467,7 @@ checksum = "f46882e17999c6cc590af592290432be3bce0428cb0d5f8b6715e4dc7b383eb3"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.53",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -1238,9 +1238,9 @@ checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.79"
+version = "1.0.89"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e835ff2298f5721608eb1a980ecaee1aef2c132bf95ecc026a11b7bf3c01c02e"
+checksum = "f139b0662de085916d1fb67d2b4169d1addddda1919e696f3252b740b629986e"
 dependencies = [
  "unicode-ident",
 ]
@@ -1429,22 +1429,22 @@ checksum = "92d43fe69e652f3df9bdc2b85b2854a0825b86e4fb76bc44d945137d053639ca"
 
 [[package]]
 name = "serde"
-version = "1.0.204"
+version = "1.0.214"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc76f558e0cbb2a839d37354c575f1dc3fdc6546b5be373ba43d95f231bf7c12"
+checksum = "f55c3193aca71c12ad7890f1785d2b73e1b9f63a0bbc353c08ef26fe03fc56b5"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.204"
+version = "1.0.214"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e0cd7e117be63d3c3678776753929474f3b04a43a080c744d6b0ae2a8c28e222"
+checksum = "de523f781f095e28fa605cdce0f8307e451cc0fd14e2eb4cd2e98a355b147766"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.53",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -1609,9 +1609,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.53"
+version = "2.0.85"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7383cd0e49fff4b6b90ca5670bfd3e9d6a733b3f90c686605aa7eec8c4996032"
+checksum = "5023162dfcd14ef8f32034d8bcd4cc5ddc61ef7a247c024a33e24e1f24d21b56"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1656,7 +1656,7 @@ checksum = "a4558b58466b9ad7ca0f102865eccc95938dca1a74a856f2b57b6629050da261"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.53",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -1683,7 +1683,7 @@ checksum = "70977707304198400eb4835a78f6a9f928bf41bba420deb8fdb175cd965d77a7"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.53",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -1762,7 +1762,7 @@ dependencies = [
  "once_cell",
  "proc-macro2",
  "quote",
- "syn 2.0.53",
+ "syn 2.0.85",
  "wasm-bindgen-shared",
 ]
 
@@ -1784,7 +1784,7 @@ checksum = "e94f17b526d0a461a191c78ea52bbce64071ed5c04c9ffe424dcb38f74171bb7"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.53",
+ "syn 2.0.85",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -2007,5 +2007,5 @@ checksum = "ce36e65b0d2999d2aafac989fb249189a141aee1f53c612c1f37d72631959f69"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.53",
+ "syn 2.0.85",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 644dbff..f82d0c9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,7 +22,7 @@ k256 = { version = "0.13.3", features = [
     "sha256",
 ] }
 rand_core = "0.6.4"
-serde = { version = "1.0.204", features = ["derive"] }
+serde = { version = "1.0.214", features = ["derive"] }
 serde_jcs = "0.1.0"
 serde_json = "1.0.120"
 sha2 = "0.10.8"