diff --git a/Cargo.lock b/Cargo.lock
index 22fe9fa1c..da9ebacc8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1105,9 +1105,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.55"
+version = "1.0.56"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec2c5d7e739bc07a3e73381a39d61fdb5f671c60c1df26a130690665803d8226"
+checksum = "3433e879a558dde8b5e8feb2a04899cf34fdde1fafb894687e52105fc1162ac3"
 dependencies = [
  "itoa",
  "ryu",
diff --git a/net_util/Cargo.toml b/net_util/Cargo.toml
index 643717d83..9744359ed 100644
--- a/net_util/Cargo.toml
+++ b/net_util/Cargo.toml
@@ -14,4 +14,4 @@ net_gen = { path = "../net_gen" }
 [dev-dependencies]
 lazy_static = "1.3.0"
 pnet = "0.26.0"
-serde_json = "1.0.55"
+serde_json = "1.0.56"