diff --git a/oak_loader/Cargo.lock b/oak_loader/Cargo.lock
index 6f306257514..2f2ac4c8856 100644
--- a/oak_loader/Cargo.lock
+++ b/oak_loader/Cargo.lock
@@ -1053,9 +1053,9 @@ checksum = "47be2f14c678be2fdcab04ab1171db51b2762ce6f0a8ee87c8dd4a04ed216135"
 
 [[package]]
 name = "itertools"
-version = "0.9.0"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "284f18f85651fe11e8a991b2adb42cb078325c996ed026d994719efcfca1d54b"
+checksum = "69ddb889f9d0d08a67338271fa9b62996bc788c7796a5c18cf057420aaed5eaf"
 dependencies = [
  "either",
 ]
diff --git a/third_party/prost/prost-build/Cargo.toml b/third_party/prost/prost-build/Cargo.toml
index 139a612407d..536e316f66c 100644
--- a/third_party/prost/prost-build/Cargo.toml
+++ b/third_party/prost/prost-build/Cargo.toml
@@ -12,7 +12,7 @@ edition = "2018"
 [dependencies]
 bytes = { version = "1", default-features = false }
 heck = "0.3"
-itertools = "0.9"
+itertools = "0.10"
 log = "0.4"
 multimap = { version = "0.8", default-features = false }
 petgraph = { version = "0.5", default-features = false }
diff --git a/third_party/prost/prost-derive/Cargo.toml b/third_party/prost/prost-derive/Cargo.toml
index 2460bd9723e..0c0b747ecc3 100644
--- a/third_party/prost/prost-derive/Cargo.toml
+++ b/third_party/prost/prost-derive/Cargo.toml
@@ -14,7 +14,7 @@ proc_macro = true
 
 [dependencies]
 anyhow = "1"
-itertools = "0.9"
+itertools = "0.10"
 proc-macro2 = "1"
 quote = "1"
 syn = { version = "1", features = [ "extra-traits" ] }