Systems and methods for annotating documents in provided in a collaborative application with data from disparate information systems are provided. The collaborative application enables the annotation of a document with data provided by another application. Particularly, the collaborative application enables a user to pick an item from a data store associated with another application. An association is established between the document and the picked item and retrieves data associated with the picked item from the data store. The document is annotated with the retrieved data. Because of the association, the collaborative application can determine that the picked item in the data store has been modified by the other application. The collaborative application may retrieve modified data associated with the picked item from the data store and update the annotation data associated with the document with the modified data.