diff --git a/masq_lib/Cargo.toml b/masq_lib/Cargo.toml
index 610dc49a2..b16807e5d 100644
--- a/masq_lib/Cargo.toml
+++ b/masq_lib/Cargo.toml
@@ -17,7 +17,7 @@ lazy_static = "1.4.0"
 regex = "1.4.3"
 serde = "1.0.118"
 serde_derive = "1.0.99"
-serde_json = "1.0.61"
+serde_json = "1.0.88"
 tiny-hderive = "0.2.1"
 toml = "0.5.8"
 websocket = {version = "0.26.0", default-features = false, features = ["sync"]}
diff --git a/node/Cargo.lock b/node/Cargo.lock
index 0b8e74bd7..4901ee547 100644
--- a/node/Cargo.lock
+++ b/node/Cargo.lock
@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "actix"
 version = "0.7.9"
@@ -1225,7 +1227,7 @@ checksum = "d6ccf5ede3a895d8856620237b2f02972c1bbc78d2965ad7fe8838d4a0ed41f0"
 dependencies = [
  "bytes 0.4.12",
  "fnv",
- "itoa",
+ "itoa 0.4.6",
 ]
 
 [[package]]
@@ -1236,7 +1238,7 @@ checksum = "7245cd7449cc792608c3c8a9eaf69bd4eabbabf802713748fd739c98b82f0747"
 dependencies = [
  "bytes 1.0.0",
  "fnv",
- "itoa",
+ "itoa 0.4.6",
 ]
 
 [[package]]
@@ -1306,7 +1308,7 @@ dependencies = [
  "http-body 0.1.0",
  "httparse",
  "iovec",
- "itoa",
+ "itoa 0.4.6",
  "log 0.4.13",
  "net2",
  "rustc_version",
@@ -1337,7 +1339,7 @@ dependencies = [
  "http-body 0.3.1",
  "httparse",
  "httpdate",
- "itoa",
+ "itoa 0.4.6",
  "pin-project 1.0.2",
  "socket2",
  "tokio 0.2.24",
@@ -1536,6 +1538,12 @@ version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dc6f3ad7b9d11a0c00842ff8de1b60ee58661048eb8049ed33c73594f359d7e6"
 
+[[package]]
+name = "itoa"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4217ad341ebadf8d8e724e264f13e593e0648f5b3e94b3896a5df283be015ecc"
+
 [[package]]
 name = "js-sys"
 version = "0.3.46"
@@ -2956,11 +2964,11 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.61"
+version = "1.0.88"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4fceb2595057b6891a4ee808f70054bd2d12f0e97f1cbb78689b59f676df325a"
+checksum = "8e8b3801309262e8184d9687fb697586833e939767aea0dda89f5a8e650e8bd7"
 dependencies = [
- "itoa",
+ "itoa 1.0.4",
  "ryu",
  "serde",
 ]
@@ -2972,7 +2980,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9ec5d77e2d4c73717816afac02670d5c4f534ea95ed430442cad02e7a6e32c97"
 dependencies = [
  "dtoa",
- "itoa",
+ "itoa 0.4.6",
  "serde",
  "url 2.1.1",
 ]
diff --git a/node/Cargo.toml b/node/Cargo.toml
index de04a87bc..d00a2e655 100644
--- a/node/Cargo.toml
+++ b/node/Cargo.toml
@@ -43,7 +43,7 @@ rusqlite = {version = "0.20.0", features = ["bundled"]}
 rustc-hex = "2.0.1"
 serde = "1.0.118"
 serde_derive = "1.0.99"
-serde_json = "1.0.61"
+serde_json = "1.0.88"
 serde_cbor = "0.11.1"
 sha1 = "0.6.0"
 sodiumoxide = "0.2.2"