diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3a7aabcf..cc87f5db 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## [Unreleased]
 
+## [0.22.2] - 2021-01-09
+
 - [Changed] Don't require `?` suffix for empty attributes. The old syntax is kept for backward compatibility.
   [#238](https://github.com/lambda-fairy/maud/pull/238)
 - [Changed] Generalize `impl Into<String> for PreEscaped<T>` to `impl From<PreEscaped<T>> for String`.
@@ -242,7 +244,8 @@
 - [Fixed] Update to latest syntax extension API
 
 
-[Unreleased]: https://github.com/lambda-fairy/maud/compare/v0.22.1...HEAD
+[Unreleased]: https://github.com/lambda-fairy/maud/compare/v0.22.2...HEAD
+[0.22.2]: https://github.com/lambda-fairy/maud/compare/v0.22.1...v0.22.2
 [0.22.1]: https://github.com/lambda-fairy/maud/compare/v0.22.0...v0.22.1
 [0.22.0]: https://github.com/lambda-fairy/maud/compare/v0.21.0...v0.22.0
 [0.21.0]: https://github.com/lambda-fairy/maud/compare/v0.20.0...v0.21.0
diff --git a/docs/Cargo.lock b/docs/Cargo.lock
index 53cd9c3b..99239580 100644
--- a/docs/Cargo.lock
+++ b/docs/Cargo.lock
@@ -8,9 +8,9 @@ checksum = "ee2a4ec343196209d6594e19543ae87a39f96d5534d7174822a3ad825dd6ed7e"
 
 [[package]]
 name = "aho-corasick"
-version = "0.7.14"
+version = "0.7.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b476ce7103678b0c6d3d395dbbae31d48ff910bd28be979ba5d48c6351131d0d"
+checksum = "7404febffaa47dac81aa44dba71523c9d069b1bdc50a77db41195149e17f68e5"
 dependencies = [
  "memchr",
 ]
@@ -43,9 +43,9 @@ checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
 
 [[package]]
 name = "base64"
-version = "0.12.3"
+version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3441f0f7b02788e948e47f457ca01f1d7e6d92c693bc132c22b087d3141c03ff"
+checksum = "904dfeac50f3cdaba28fc6f57fdcddb75f49ed61346676a78c4ffe55877802fd"
 
 [[package]]
 name = "bincode"
@@ -92,21 +92,15 @@ checksum = "e3b5ca7a04898ad4bcd41c90c5285445ff5b791899bb1b0abdd2a2aa791211d7"
 
 [[package]]
 name = "byteorder"
-version = "1.3.4"
+version = "1.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08c48aae112d48ed9f069b33538ea9e3e90aa263cfa3d1c24309612b1f7472de"
+checksum = "ae44d1a3d5a19df61dd0c8beb138458ac2a53a7ac09eba97d55592540004306b"
 
 [[package]]
 name = "cc"
-version = "1.0.61"
+version = "1.0.66"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ed67cbde08356238e75fc4656be4749481eeffb09e19f320a25237d5221c985d"
-
-[[package]]
-name = "cfg-if"
-version = "0.1.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
+checksum = "4c0496836a84f8d0495758516b8621a622beb77c0fed418570e50764093ced48"
 
 [[package]]
 name = "cfg-if"
@@ -164,7 +158,7 @@ version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "81156fece84ab6a9f2afdb109ce3ae577e42b1228441eded99bd77f627953b1a"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
 ]
 
 [[package]]
@@ -200,11 +194,11 @@ checksum = "e88a8acf291dafb59c2d96e8f59828f3838bb1a70398823ade51a84de6a6deed"
 
 [[package]]
 name = "flate2"
-version = "1.0.18"
+version = "1.0.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da80be589a72651dcda34d8b35bcdc9b7254ad06325611074d9cc0fbb19f60ee"
+checksum = "7411863d55df97a419aa64cb4d2f167103ea9d767e2c54a1868b7ac3f6b47129"
 dependencies = [
- "cfg-if 0.1.10",
+ "cfg-if",
  "crc32fast",
  "libc",
  "miniz_oxide",
@@ -227,9 +221,12 @@ dependencies = [
 
 [[package]]
 name = "hashbrown"
-version = "0.9.1"
+version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d7afe4a420e3fe79967a00898cc1f4db7c8a49a9333a29f8a4bd76a253d5cd04"
+checksum = "e91b62f79061a0bc2e046024cb7ba44b08419ed238ecbd9adbd787434b9e8c25"
+dependencies = [
+ "autocfg",
+]
 
 [[package]]
 name = "hermit-abi"
@@ -242,9 +239,9 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "1.6.0"
+version = "1.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "55e2e4c765aa53a0424761bf9f41aa7a6ac1efa87238f59560640e27fca028f2"
+checksum = "4e47a3566dd4fd4eec714ae6ceabdee0caec795be835c223d92c2d40f1e8cf1c"
 dependencies = [
  "autocfg",
  "hashbrown",
@@ -252,9 +249,9 @@ dependencies = [
 
 [[package]]
 name = "itoa"
-version = "0.4.6"
+version = "0.4.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc6f3ad7b9d11a0c00842ff8de1b60ee58661048eb8049ed33c73594f359d7e6"
+checksum = "dd25036021b0de88a0aff6b850051563c6516d0bf53f8638938edbb9de732736"
 
 [[package]]
 name = "lazy_static"
@@ -270,9 +267,9 @@ checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
 
 [[package]]
 name = "libc"
-version = "0.2.80"
+version = "0.2.82"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4d58d1b70b004888f764dfbf6a26a3b0342a1632d33968e4a179d8011c760614"
+checksum = "89203f3fba0a3795506acaad8ebce3c80c0af93f994d5a1d7a0b1eeb23271929"
 
 [[package]]
 name = "line-wrap"
@@ -285,9 +282,9 @@ dependencies = [
 
 [[package]]
 name = "linked-hash-map"
-version = "0.5.3"
+version = "0.5.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8dd5a6d5999d9907cda8ed67bbd137d3af8085216c2ac62de5be860bd41f304a"
+checksum = "7fb9b38af92608140b86b693604b9ffcc5824240a484d1ecd4795bacb2fe88f3"
 
 [[package]]
 name = "maplit"
@@ -297,7 +294,7 @@ checksum = "3e2e65a1a2e43cfcb47a895c4c8b10d1f4a61097f9f254f183aee60cad9c651d"
 
 [[package]]
 name = "maud"
-version = "0.22.1"
+version = "0.22.2"
 dependencies = [
  "maud_htmlescape",
  "maud_macros",
@@ -309,7 +306,7 @@ version = "0.17.0"
 
 [[package]]
 name = "maud_macros"
-version = "0.22.1"
+version = "0.22.2"
 dependencies = [
  "maud_htmlescape",
  "proc-macro-error",
@@ -355,9 +352,9 @@ dependencies = [
 
 [[package]]
 name = "onig"
-version = "6.1.0"
+version = "6.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a155d13862da85473665694f4c05d77fb96598bdceeaf696433c84ea9567e20"
+checksum = "30b46fd9edbc018f0be4e366c24c46db44fac49cd01c039ae85308088b089dd5"
 dependencies = [
  "bitflags",
  "lazy_static",
@@ -367,9 +364,9 @@ dependencies = [
 
 [[package]]
 name = "onig_sys"
-version = "69.5.1"
+version = "69.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9bff06597a6b17855040955cae613af000fc0bfc8ad49ea68b9479a74e59292d"
+checksum = "ed063c96cf4c0f2e5d09324409d158b38a0a85a7b90fbd68c8cad75c495d5775"
 dependencies = [
  "cc",
  "pkg-config",
@@ -432,9 +429,9 @@ checksum = "3831453b3449ceb48b6d9c7ad7c96d5ea673e9b470a1dc578c2ce6521230884c"
 
 [[package]]
 name = "plist"
-version = "1.0.0"
+version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7b336d94e8e4ce29bf15bba393164629764744c567e8ad306cc1fdd0119967fd"
+checksum = "4dc57ccf442c7414b790e8e7b72fb4d776a66c7680129360946d9aaa6f5311e9"
 dependencies = [
  "base64",
  "chrono",
@@ -479,18 +476,18 @@ dependencies = [
 
 [[package]]
 name = "quote"
-version = "1.0.7"
+version = "1.0.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "aa563d17ecb180e500da1cfd2b028310ac758de548efdd203e18f283af693f37"
+checksum = "991431c3519a3f36861882da93630ce66b52918dcf1b8e2fd66b397fc96f28df"
 dependencies = [
  "proc-macro2",
 ]
 
 [[package]]
 name = "regex"
-version = "1.4.2"
+version = "1.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "38cf2c13ed4745de91a5eb834e11c00bcc3709e773173b2ce4c56c9fbde04b9c"
+checksum = "d9251239e129e16308e70d853559389de218ac275b515068abc96829d05b948a"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -500,9 +497,9 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.6.21"
+version = "0.6.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3b181ba2dcf07aaccad5448e8ead58db5b742cf85dfe035e2227f137a539a189"
+checksum = "b5eb417147ba9860a96cfe72a0b93bf88fee1744b5636ec99ab20c1aa9376581"
 
 [[package]]
 name = "ryu"
@@ -527,15 +524,15 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.117"
+version = "1.0.118"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b88fa983de7720629c9387e9f517353ed404164b1e482c970a90c1a4aaf7dc1a"
+checksum = "06c64263859d87aa2eb554587e2d23183398d617427327cf2b3d0ed8c69e4800"
 
 [[package]]
 name = "serde_derive"
-version = "1.0.117"
+version = "1.0.118"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cbd1ae72adb44aab48f325a02444a5fc079349a8d804c1fc922aed3f7454c74e"
+checksum = "c84d3526699cd55261af4b941e4e725444df67aa4f9e6a3564f18030d12672df"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -544,9 +541,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.59"
+version = "1.0.61"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dcac07dbffa1c65e7f816ab9eba78eb142c6d44410f4eeba1e26e4f5dfa56b95"
+checksum = "4fceb2595057b6891a4ee808f70054bd2d12f0e97f1cbb78689b59f676df325a"
 dependencies = [
  "itoa",
  "ryu",
@@ -579,9 +576,9 @@ checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 
 [[package]]
 name = "syn"
-version = "1.0.48"
+version = "1.0.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cc371affeffc477f42a221a1e4297aedcea33d47d19b61455588bd9d8f6b19ac"
+checksum = "cc60a3d73ea6594cd712d830cc1f0390fd71542d8c8cd24e70cc54cdfd5e05d5"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -590,9 +587,9 @@ dependencies = [
 
 [[package]]
 name = "syntect"
-version = "4.4.0"
+version = "4.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4e3978df05b5850c839a6b352d3c35ce0478944a4be689be826b53cf75363e88"
+checksum = "2bfac2b23b4d049dc9a89353b4e06bbc85a8f42020cccbe5409a115cf19031e5"
 dependencies = [
  "bincode",
  "bitflags",
@@ -621,9 +618,9 @@ dependencies = [
 
 [[package]]
 name = "thread_local"
-version = "1.0.1"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d40c6d1b69745a6ec6fb1ca717914848da4b44ae29d9b3080cbee91d72a69b14"
+checksum = "bb9bc092d0d51e76b2b19d9d85534ffc9ec2db959a2523cdae0697e2972cd447"
 dependencies = [
  "lazy_static",
 ]
@@ -748,9 +745,9 @@ checksum = "b07db065a5cf61a7e4ba64f29e67db906fb1787316516c4e6e5ff0fea1efcd8a"
 
 [[package]]
 name = "yaml-rust"
-version = "0.4.4"
+version = "0.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "39f0c922f1a334134dc2f7a8b67dc5d25f0735263feec974345ff706bcf20b0d"
+checksum = "56c1936c4cc7a1c9ab21a1ebb602eb942ba868cbd44a99cb7cdc5892335e1c85"
 dependencies = [
  "linked-hash-map",
 ]
diff --git a/maud/Cargo.toml b/maud/Cargo.toml
index 3a1fc8b8..6d5fc3d5 100644
--- a/maud/Cargo.toml
+++ b/maud/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "maud"
 # When releasing a new version, please update html_root_url in src/lib.rs
-version = "0.22.1"
+version = "0.22.2"
 authors = ["Chris Wong <lambda.fairy@gmail.com>"]
 license = "MIT/Apache-2.0"
 documentation = "https://docs.rs/maud/"
@@ -19,7 +19,7 @@ actix-web = ["actix-web-dep", "futures-util"]
 
 [dependencies]
 maud_htmlescape = { version = "0.17.0", path = "../maud_htmlescape" }
-maud_macros = { version = "0.22.1", path = "../maud_macros" }
+maud_macros = { version = "0.22.2", path = "../maud_macros" }
 iron = { version = ">= 0.5.1, < 0.7.0", optional = true }
 rocket = { version = ">= 0.3, < 0.5", optional = true }
 futures-util = { version = "0.3.0", optional = true, default-features = false }
diff --git a/maud/src/lib.rs b/maud/src/lib.rs
index abb84c32..035c1b40 100644
--- a/maud/src/lib.rs
+++ b/maud/src/lib.rs
@@ -5,7 +5,7 @@
 //!
 //! [book]: https://maud.lambda.xyz/
 
-#![doc(html_root_url = "https://docs.rs/maud/0.22.1")]
+#![doc(html_root_url = "https://docs.rs/maud/0.22.2")]
 
 use std::fmt::{self, Write};
 
diff --git a/maud_macros/Cargo.toml b/maud_macros/Cargo.toml
index 4a3ce8e4..e0f52f0b 100644
--- a/maud_macros/Cargo.toml
+++ b/maud_macros/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "maud_macros"
 # When releasing a new version, please update html_root_url in src/lib.rs
-version = "0.22.1"
+version = "0.22.2"
 authors = ["Chris Wong <lambda.fairy@gmail.com>"]
 license = "MIT/Apache-2.0"
 documentation = "https://docs.rs/maud_macros/"
diff --git a/maud_macros/src/lib.rs b/maud_macros/src/lib.rs
index c5565b2e..9f531819 100644
--- a/maud_macros/src/lib.rs
+++ b/maud_macros/src/lib.rs
@@ -1,4 +1,4 @@
-#![doc(html_root_url = "https://docs.rs/maud_macros/0.22.1")]
+#![doc(html_root_url = "https://docs.rs/maud_macros/0.22.2")]
 // TokenStream values are reference counted, and the mental overhead of tracking
 // lifetimes outweighs the marginal gains from explicit borrowing
 #![allow(clippy::needless_pass_by_value)]