diff --git a/Cargo.lock b/Cargo.lock
index 7b5edd65e..30bd8d1a5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3902,9 +3902,9 @@ dependencies = [
 
 [[package]]
 name = "serde_with"
-version = "3.3.0"
+version = "3.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1ca3b16a3d82c4088f343b7480a93550b3eabe1a358569c2dfe38bbcead07237"
+checksum = "64cd236ccc1b7a29e7e2739f27c0b2dd199804abc4290e32f59f3b68d6405c23"
 dependencies = [
  "base64 0.21.4",
  "chrono",
@@ -3913,7 +3913,7 @@ dependencies = [
  "indexmap 2.0.2",
  "serde",
  "serde_json",
- "serde_with_macros 3.3.0",
+ "serde_with_macros 3.4.0",
  "time",
 ]
 
@@ -3931,9 +3931,9 @@ dependencies = [
 
 [[package]]
 name = "serde_with_macros"
-version = "3.3.0"
+version = "3.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2e6be15c453eb305019bfa438b1593c731f36a289a7853f7707ee29e870b3b3c"
+checksum = "93634eb5f75a2323b16de4748022ac4297f9e76b6dced2be287a099f41b5e788"
 dependencies = [
  "darling 0.20.3",
  "proc-macro2",
@@ -5461,7 +5461,7 @@ dependencies = [
  "serde",
  "serde-big-array",
  "serde_json",
- "serde_with 3.3.0",
+ "serde_with 3.4.0",
  "sha2",
  "spandoc",
  "static_assertions",
diff --git a/zebra-chain/Cargo.toml b/zebra-chain/Cargo.toml
index 8cc223cd5..60a978532 100644
--- a/zebra-chain/Cargo.toml
+++ b/zebra-chain/Cargo.toml
@@ -97,7 +97,7 @@ tracing = "0.1.39"
 # Serialization
 hex = { version = "0.4.3", features = ["serde"] }
 serde = { version = "1.0.188", features = ["serde_derive", "rc"] }
-serde_with = "3.3.0"
+serde_with = "3.4.0"
 serde-big-array = "0.5.1"
 
 # Processing