We report on the cosmic ray mass composition measured by the Telescope Array Low-energy Extension (TALE) hybrid detector. The TALE detector consists of a Fluorescence Detector (FD) station with 10 FD telescopes located at the TA Middle Drum FD Station (itself made up of 14 FD telescopes), and a Surface Detector (SD) array of scintillation counters. The SD array consists of 40 counters with 400 m spacing and 40 counters with 600 m spacing. The FD station, with a total of 24 telescopes, overlooks the SD array and provides sky coverage with an elevation angle range of $3^{\circ}$ to $59^{\circ}$. In this contribution, we will present the latest result of the cosmic ray mass composition measurement in the energy range from $10^{16.5}$ eV to $10^{18.5}$ eV using almost 5 years of TALE hybrid data.