diff --git a/Cargo.lock b/Cargo.lock
index a390e8612..f0d70793a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4156,9 +4156,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.80"
+version = "1.0.81"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f972498cf015f7c0746cac89ebe1d6ef10c293b94175a243a2d9442c163d9944"
+checksum = "9b7ce2b32a1aed03c558dc61a5cd328f15aff2dbc17daad8fb8af04d2100e15c"
 dependencies = [
  "indexmap",
  "itoa 1.0.1",
diff --git a/zebra-rpc/Cargo.toml b/zebra-rpc/Cargo.toml
index 81e41ec9c..1634c5d10 100644
--- a/zebra-rpc/Cargo.toml
+++ b/zebra-rpc/Cargo.toml
@@ -27,7 +27,7 @@ jsonrpc-core = "18.0.0"
 jsonrpc-derive = "18.0.0"
 jsonrpc-http-server = "18.0.0"
 # zebra-rpc needs the preserve_order feature in serde_json, which is a dependency of jsonrpc-core
-serde_json = { version = "1.0.80", features = ["preserve_order"] }
+serde_json = { version = "1.0.81", features = ["preserve_order"] }
 indexmap = { version = "1.8.1", features = ["serde"] }
 
 tokio = { version = "1.18.1", features = ["time", "rt-multi-thread", "macros", "tracing"] }
@@ -45,7 +45,7 @@ proptest-derive = { version = "0.3.0", optional = true }
 [dev-dependencies]
 proptest = "0.10.1"
 proptest-derive = "0.3.0"
-serde_json = "1.0.80"
+serde_json = "1.0.81"
 thiserror = "1.0.30"
 tokio = { version = "1.18.1", features = ["full", "test-util"] }
 
diff --git a/zebra-utils/Cargo.toml b/zebra-utils/Cargo.toml
index a2ab22612..bba7e829c 100644
--- a/zebra-utils/Cargo.toml
+++ b/zebra-utils/Cargo.toml
@@ -11,7 +11,7 @@ publish = false
 structopt = "0.3.26"
 color-eyre = "0.6.0"
 hex = "0.4.3"
-serde_json = "1.0.80"
+serde_json = "1.0.81"
 tracing-error = { version = "0.1.2", features = ["traced-error"] }
 tracing-subscriber = { version = "0.2.25", features = ["tracing-log"] }
 
diff --git a/zebrad/Cargo.toml b/zebrad/Cargo.toml
index ba77d7e60..599ad2e32 100644
--- a/zebrad/Cargo.toml
+++ b/zebrad/Cargo.toml
@@ -79,7 +79,7 @@ regex = "1.5.5"
 reqwest = "0.11"
 semver = "1.0.9"
 # zebra-rpc needs the preserve_order feature, it also makes test results more stable
-serde_json = { version = "1.0.80", features = ["preserve_order"] }
+serde_json = { version = "1.0.81", features = ["preserve_order"] }
 tempfile = "3.3.0"
 tokio = { version = "1.18.1", features = ["full", "test-util"] }
 tonic = "0.7.0"