diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4e76f8f0..a9860049 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## 3.6.7 - 2022-04-15
+
+### Fixed
+
+- Fix serialization of `numpy.datetime64("NaT")` to raise on an
+unsupported type.
+
 ## 3.6.7 - 2022-02-14
 
 ### Changed
diff --git a/Cargo.lock b/Cargo.lock
index c8da6302..f3b67b5f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -131,7 +131,7 @@ checksum = "87f3e037eac156d1775da914196f0f37741a274155e34a0b7e427c35d2a2ecb9"
 
 [[package]]
 name = "orjson"
-version = "3.6.7"
+version = "3.6.8"
 dependencies = [
  "ahash",
  "arrayvec",
diff --git a/Cargo.toml b/Cargo.toml
index d715bdd2..4e969cdf 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "orjson"
-version = "3.6.7"
+version = "3.6.8"
 authors = ["ijl <ijl@mailbox.org>"]
 description = "Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy"
 edition = "2018"
diff --git a/README.md b/README.md
index 4e6f159f..9944ca77 100644
--- a/README.md
+++ b/README.md
@@ -643,11 +643,6 @@ class Object:
 >>> orjson.dumps(Object(1, "a", [Member(1, True), Member(2)]))
 b'{"id":1,"name":"a","members":[{"id":1,"active":true},{"id":2,"active":false}]}'
 ```
-Users may wish to control how dataclass instances are serialized, e.g.,
-to not serialize an attribute or to change the name of an
-attribute when serialized. orjson may implement support using the
-metadata mapping on `field` attributes,
-e.g., `field(metadata={"json_serialize": False})`, if use cases are clear.
 
 ### datetime