  The pion light-cone distribution amplitude (LCDA) is a central
non-perturbative object of interest for the calculation of high-energy
exclusive processes in quantum chromodynamics. In this article, we discuss the
calculation of the second and fourth Mellin moment of the pion LCDA using a
heavy-quark operator product expansion. The resulting value for the second
Mellin moment is $ \langle{ \xi^2 }\rangle(\mu = 2~\text{GeV})= 0.210 \pm
0.013\text{ (stat.)} \pm 0.034\text{ (sys.)}$. This result is compatible with
those from previous determinations of this quantity.
