For many leaders, improving the competencies of the talent within their functions is a top priority. However, this is often approached in a shortsighted way, with leaders assuming that quick fixes like covering a topic in a team meeting or sending someone to a day of training will magically transform their performance. Real and lasting competency development requires an ongoing process to learn and apply concepts to real work situations and reinforce new behaviors over time. In this report, we introduce the Forrester Ongoing Upskilling Loop, a framework for addressing competency gaps through a four-stage approach to upskilling that can result in lasting change and improved performance.