diff --git a/Cargo.lock b/Cargo.lock
index 0bd6f03c..fcf75e15 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2367,9 +2367,9 @@ checksum = "35e70ee094dc02fd9c13fdad4940090f22dbd6ac7c9e7094a46cf0232a50bc7c"
 
 [[package]]
 name = "itertools"
-version = "0.10.3"
+version = "0.10.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a9a9d19fa1e79b6215ff29b9d6880b706147f16e9b1dbb1e4e5947b5b02bc5e3"
+checksum = "d8bf247779e67a9082a4790b45e71ac7cfd1321331a5c856a74a9faebdab78d0"
 dependencies = [
  "either",
 ]
diff --git a/zebra-chain/Cargo.toml b/zebra-chain/Cargo.toml
index 3075f157..df9944d3 100644
--- a/zebra-chain/Cargo.toml
+++ b/zebra-chain/Cargo.toml
@@ -66,7 +66,7 @@ serde-big-array = "0.4.1"
 
 # Processing
 futures = "0.3.24"
-itertools = "0.10.3"
+itertools = "0.10.4"
 rayon = "1.5.3"
 
 # ZF deps
diff --git a/zebra-state/Cargo.toml b/zebra-state/Cargo.toml
index a5cc4cd5..52c2bd66 100644
--- a/zebra-state/Cargo.toml
+++ b/zebra-state/Cargo.toml
@@ -15,7 +15,7 @@ dirs = "4.0.0"
 displaydoc = "0.2.3"
 futures = "0.3.24"
 hex = "0.4.3"
-itertools = "0.10.3"
+itertools = "0.10.4"
 lazy_static = "1.4.0"
 metrics = "0.18.1"
 mset = "0.1.0"