diff --git a/Cargo.lock b/Cargo.lock
index e25dc601..3713bc4f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2858,7 +2858,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d0f3e5beed80eb580c68e2c600937ac2c4eedabdfd5ef1e5b7ea4f3fba84497b"
 dependencies = [
  "heck 0.5.0",
- "itertools 0.12.1",
+ "itertools 0.13.0",
  "log",
  "multimap",
  "once_cell",
@@ -2878,7 +2878,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "157c5a9d7ea5c2ed2d9fb8f495b64759f7816c7eaea54ba3978f0d63000162e3"
 dependencies = [
  "anyhow",
- "itertools 0.12.1",
+ "itertools 0.13.0",
  "proc-macro2",
  "quote",
  "syn 2.0.87",
@@ -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 03883175..010cb42f 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 = "0.2.0" }
-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 4d9a8ceb..9532c729 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"] }