diff --git a/website/source/docs/configuration/interpolation.html.md b/website/source/docs/configuration/interpolation.html.md
index 6b38c7807e..47b21b7196 100644
--- a/website/source/docs/configuration/interpolation.html.md
+++ b/website/source/docs/configuration/interpolation.html.md
@@ -161,6 +161,8 @@ The supported built-in functions are:
     Note that if the item is a string, the return value includes the double
     quotes.
 
+  * `keys(map)` - Returns a lexically sorted, JSON-encoded list of the map keys.
+
   * `length(list)` - Returns a number of members in a given list
       or a number of characters in a given string.
       * `${length(split(",", "a,b,c"))}` = 3
@@ -218,6 +220,8 @@ The supported built-in functions are:
 
   * `uuid()` - Returns a UUID string in RFC 4122 v4 format. This string will change with every invocation of the function, so in order to prevent diffs on every plan & apply, it must be used with the [`ignore_changes`](/docs/configuration/resources.html#ignore-changes) lifecycle attribute.
 
+  * `values(map)` - Returns a JSON-encoded list of the map values, in the order of the keys returned by the `keys` function.
+
 ## Templates
 
 Long strings can be managed using templates. [Templates](/docs/providers/template/index.html) are [resources](/docs/configuration/resources.html) defined by a filename and some variables to use during interpolation. They have a computed `rendered` attribute containing the result.