diff --git a/docs/user-defined-type-functions.md b/docs/user-defined-type-functions.md
index 831650f..9f1a3dc 100644
--- a/docs/user-defined-type-functions.md
+++ b/docs/user-defined-type-functions.md
@@ -152,6 +152,7 @@ All attributes of newly created typelib are initialized with empty tables / arra
 | ------------- | ------------- | ------------- |
 | `addprop(key: typelib, value: typelib)` | `nil` | adds a key, value pair to self's table properties; if the same key exists already, overrides the value |
 | `delprop(key: typelib)` | `nil` | removes the key from self's table properties along with the value associated with it (equivalent of `addprop(key, nil)`); if the key doesn't exist, nothing happens |
+| `getprop(key: typelib)` | `typelib?` | returns the value associated with the key from self's table properties if the key exists, else nil |
 | `getprops()` | `{[typelib]: typelib}` | returns a table of self's table properties (e.g. `{["age"] = 20}` will return `{typelib.getstringsingleton("age") = typelib.getnumber()}`) |
 | `setindexer(key: typelib, value: typelib)` | `nil` | sets self's indexer key type to the first argument and indexer value type to the second |
 | `getindexer()` | `{key: typelib, value: typelib}?` | returns a table containing self's indexer key type and value type if they exist, else nil |