diff --git a/Cargo.lock b/Cargo.lock
index 0ca44b5..62d74f3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -237,9 +237,9 @@ dependencies = [
 
 [[package]]
 name = "itoa"
-version = "0.4.7"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dd25036021b0de88a0aff6b850051563c6516d0bf53f8638938edbb9de732736"
+checksum = "4217ad341ebadf8d8e724e264f13e593e0648f5b3e94b3896a5df283be015ecc"
 
 [[package]]
 name = "keccak"
@@ -524,9 +524,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.69"
+version = "1.0.87"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e466864e431129c7e0d3476b92f20458e5879919a0596c6472738d9fa2d342f8"
+checksum = "6ce777b7b150d76b9cf60d28b55f5847135a003f7d7350c6be7a773508ce7d45"
 dependencies = [
  "indexmap",
  "itoa",