diff --git a/Cargo.lock b/Cargo.lock
index 101d722fa..3729926e6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3822,9 +3822,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.89"
+version = "1.0.91"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "020ff22c755c2ed3f8cf162dbb41a7268d934702f3ed3631656ea597e08fc3db"
+checksum = "877c235533714907a8c2464236f5c4b2a17262ef1bd71f38f35ea592c8da6883"
 dependencies = [
  "indexmap",
  "itoa",
diff --git a/zebra-rpc/Cargo.toml b/zebra-rpc/Cargo.toml
index 68f899c54..ae2785f3b 100644
--- a/zebra-rpc/Cargo.toml
+++ b/zebra-rpc/Cargo.toml
@@ -43,7 +43,7 @@ jsonrpc-http-server = "18.0.0"
 num_cpus = "1.14.0"
 
 # zebra-rpc needs the preserve_order feature in serde_json, which is a dependency of jsonrpc-core
-serde_json = { version = "1.0.89", features = ["preserve_order"] }
+serde_json = { version = "1.0.91", features = ["preserve_order"] }
 indexmap = { version = "1.9.2", features = ["serde"] }
 
 tokio = { version = "1.23.0", features = ["time", "rt-multi-thread", "macros", "tracing"] }
diff --git a/zebra-utils/Cargo.toml b/zebra-utils/Cargo.toml
index abb9ce4d5..ed5837fdd 100644
--- a/zebra-utils/Cargo.toml
+++ b/zebra-utils/Cargo.toml
@@ -15,7 +15,7 @@ tinyvec = { version = "1.6.0", features = ["rustc_1_55"] }
 
 structopt = "0.3.26"
 hex = "0.4.3"
-serde_json = "1.0.89"
+serde_json = "1.0.91"
 tracing-error = "0.2.0"
 tracing-subscriber = "0.3.16"
 
diff --git a/zebrad/Cargo.toml b/zebrad/Cargo.toml
index 5d1e6fa41..941f7b0c4 100644
--- a/zebrad/Cargo.toml
+++ b/zebrad/Cargo.toml
@@ -172,7 +172,7 @@ regex = "1.7.0"
 semver = "1.0.14"
 
 # zebra-rpc needs the preserve_order feature, it also makes test results more stable
-serde_json = { version = "1.0.89", features = ["preserve_order"] }
+serde_json = { version = "1.0.91", features = ["preserve_order"] }
 tempfile = "3.3.0"
 
 hyper = { version = "0.14.23", features = ["http1", "http2", "server"]}