diff --git a/Cargo.lock b/Cargo.lock
index 5d8ccb8eced..d6f1ab2fd49 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1191,7 +1191,7 @@ checksum = "f93d03419cb5950ccfd3daf3ff1c7a36ace64609a1a8746d493df1ca0afde0fa"
 dependencies = [
  "cssparser-macros",
  "dtoa-short",
- "itoa 1.0.1",
+ "itoa",
  "matches",
  "phf",
  "proc-macro2",
@@ -2693,7 +2693,7 @@ checksum = "75f43d41e26995c17e71ee126451dd3941010b0514a81a9d11f3b341debc2399"
 dependencies = [
  "bytes",
  "fnv",
- "itoa 1.0.1",
+ "itoa",
 ]
 
 [[package]]
@@ -2740,7 +2740,7 @@ dependencies = [
  "http-body",
  "httparse",
  "httpdate",
- "itoa 1.0.1",
+ "itoa",
  "pin-project-lite",
  "socket2 0.4.9",
  "tokio",
@@ -2918,10 +2918,13 @@ dependencies = [
 ]
 
 [[package]]
-name = "itoa"
-version = "0.4.8"
+name = "itertools"
+version = "0.10.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b71991ff56294aa922b450139ee08b3bfc70982c6b2c7562771375cf73542dd4"
+checksum = "b0fd2260e829bddf4cb6ea802289de2f86d6a7a690192fbe91b3f46e0f2c8473"
+dependencies = [
+ "either",
+]
 
 [[package]]
 name = "itoa"
@@ -4862,7 +4865,7 @@ dependencies = [
  "image",
  "indexmap",
  "ipc-channel",
- "itertools",
+ "itertools 0.8.0",
  "jstraceable_derive",
  "keyboard-types",
  "lazy_static",
@@ -5102,7 +5105,7 @@ version = "1.0.107"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6b420ce6e3d8bd882e9b243c6eed35dbc9a6110c9769e74b584e0d68d1f20c65"
 dependencies = [
- "itoa 1.0.1",
+ "itoa",
  "ryu",
  "serde",
 ]
@@ -5114,7 +5117,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d3491c14715ca2294c4d6a88f15e84739788c1d030eed8c110436aafdaa2f3fd"
 dependencies = [
  "form_urlencoded",
- "itoa 1.0.1",
+ "itoa",
  "ryu",
  "serde",
 ]
@@ -5361,7 +5364,7 @@ dependencies = [
 name = "servo_config_plugins"
 version = "0.0.1"
 dependencies = [
- "itertools",
+ "itertools 0.8.0",
  "proc-macro2",
  "quote",
  "syn 2.0.37",
@@ -5781,8 +5784,8 @@ dependencies = [
  "fxhash",
  "html5ever",
  "indexmap",
- "itertools",
- "itoa 0.4.8",
+ "itertools 0.10.5",
+ "itoa",
  "lazy_static",
  "log",
  "malloc_size_of",
@@ -6073,7 +6076,7 @@ version = "0.3.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "59e399c068f43a5d116fedaf73b203fa4f9c519f17e2b34f63221d3792f81446"
 dependencies = [
- "itoa 1.0.1",
+ "itoa",
  "libc",
  "num_threads",
  "serde",
diff --git a/components/style/Cargo.toml b/components/style/Cargo.toml
index 4ede46270ae..e4da882b70a 100644
--- a/components/style/Cargo.toml
+++ b/components/style/Cargo.toml
@@ -48,8 +48,8 @@ euclid = "0.22"
 fxhash = "0.2"
 html5ever = { version = "0.26", optional = true }
 indexmap = "1.0"
-itertools = "0.8"
-itoa = "0.4"
+itertools = "0.10"
+itoa = "1.0"
 lazy_static = "1"
 log = { version = "0.4", features = ["std"] }
 malloc_size_of = { path = "../malloc_size_of" }
diff --git a/components/style/values/specified/color.rs b/components/style/values/specified/color.rs
index 493c2cf8c85..6a285a265d5 100644
--- a/components/style/values/specified/color.rs
+++ b/components/style/values/specified/color.rs
@@ -619,7 +619,10 @@ impl Color {
         let mut serialization = [b'0'; 6];
         let space_padding = 6 - total;
         let mut written = space_padding;
-        written += itoa::write(&mut serialization[written..], value).unwrap();
+        let mut buf = itoa::Buffer::new();
+        let s = buf.format(value);
+        (&mut serialization[written..]).write_all(s.as_bytes()).unwrap();
+        written += s.len();
         if let Some(unit) = unit {
             written += (&mut serialization[written..])
                 .write(unit.as_bytes())