diff --git a/CHANGELOG.md b/CHANGELOG.md
index 771a313..65be773 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,14 @@
 # Changelog
 
+## Unreleased
+
+- Provided functions for handling timestamp values. The `timestamp` function
+  coerces a `#(#(Int, Int, Int), #(Int, Int, Int))` value representing
+  `#(#(year, month, day), #(hour, minute, second))` into a `Value`. The
+  `decode_timestamp` function can be used to decode a dynamic value returned from
+  the database as a timestamp in the same nested tuple format.
+
+
 ## v0.8.0 - 2024-05-20
 
 - Added `array` column handling, accepting a `List` as value.
diff --git a/src/gleam/pgo.gleam b/src/gleam/pgo.gleam
index c3b188e..79a32ea 100644
--- a/src/gleam/pgo.gleam
+++ b/src/gleam/pgo.gleam
@@ -158,6 +158,7 @@ pub fn text(a: String) -> Value
 @external(erlang, "gleam_pgo_ffi", "coerce")
 pub fn bytea(a: BitArray) -> Value
 
+/// Coerce a timestamp represented as `#(#(year, month, day), #(hour, minute, second))` into a `Value`.
 @external(erlang, "gleam_pgo_ffi", "coerce")
 pub fn array(a: List(a)) -> Value