  We use the latest solution of the ephemeris INPOP (19a) in order to improve
our previous constraint on the existence of a Yukawa suppression to the
Newtonian potential, generically associated to a graviton's mass. Unlike the
ephemeris INPOP17a, several residuals are found to degrade significantly at
roughly the same amplitudes of the Compton wavelength $\lambda_g$. As a
consequence, we introduce a novel statistical criterion in order to derive the
constraint with INPOP19a. After checking that it leads to a constraint
consistent with our previous result when applied on INPOP17b, we apply the
method to the new solution INPOP19a. We show that the residuals of Mars
orbiters, Cassini, Messenger, and Juno, degrade significantly when $\lambda_g
\leq$ $3.43 \times 10^{13}$ km with a 99,7% confidence level -- corresponding
to a graviton mass bigger than $3.62 \times 10^{-23}$ eV$/c^2$. This is a
stronger constraint on the Compton wavelength than the one obtained from the
first gravitational-wave transient catalog by the LIGO-Virgo collaboration in
the radiative regime, since our 90% C.L. limit reads $\lambda_g >3.93 \times
10^{13}$ km ($m_g <3.16 \times 10^{-23}$ eV$/c^2$).
