diff --git a/Cargo.lock b/Cargo.lock
index c551c6d..092f2bc 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3501,9 +3501,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.134"
+version = "1.0.138"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d00f4175c42ee48b15416f6193a959ba3a0d67fc699a0db9ad12df9f83991c7d"
+checksum = "d434192e7da787e94a6ea7e9670b26a036d0ca41e0b7efb2676dd32bae872949"
 dependencies = [
  "itoa",
  "memchr",
diff --git a/frostd/Cargo.toml b/frostd/Cargo.toml
index 8b38826..54a9330 100644
--- a/frostd/Cargo.toml
+++ b/frostd/Cargo.toml
@@ -21,7 +21,7 @@ rand = "0.8"
 rcgen = "0.13.2"
 serde = { version = "1.0", features = ["derive"] }
 serdect = { version = "0.3.0" }
-serde_json = "1.0.134"
+serde_json = "1.0.138"
 snow = "0.9.6"
 tokio = { version = "1.42", features = ["full"] }
 tempfile = "3.14.0"
diff --git a/zcash-sign/Cargo.toml b/zcash-sign/Cargo.toml
index 4d9a8ce..9532c72 100644
--- a/zcash-sign/Cargo.toml
+++ b/zcash-sign/Cargo.toml
@@ -17,7 +17,7 @@ rand_core = "0.6.4"
 sapling-crypto = "0.4.0"
 serde = "1.0.204"
 serde-hex = "0.1.0"
-serde_json = "1.0.120"
+serde_json = "1.0.138"
 serde_with = { version = "3.9.0", features = ["hex"] }
 zcash_address = "0.6.2"
 zcash_client_backend = { version = "0.16.0", features = ["orchard"] }