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Context. In 2020, the initial version of the Stellar Potential PerturbersDatabase (StePPeD) was presented with the aim to deliver up-to-date informationon the stars and stellar systems that may perturb a long-period comet motion.We used the minimal distance between a star and the Sun as a selecting toolwhen compiling a list of interesting objects with close encounters with theSolar System, and our selection for that study was based on Gaia DR2 data.Aims. When the Gaia EDR3 data release was published, it became necessary toupdate this database. Additionally, we performed Monte Carlo simulations toobtain uncertainties on the parameters of the closest approach to the Sun ofeach object. Methods. We recalculated the close approach parameters of allstars in the previous StePPeD release, which resulted in removing approximatelyone-third of the total. Then we searched for new candidates in the whole GaiaEDR3 catalogue. We also take into account the duplicity of the found stars andadditionally searched for double stars passing near the Sun which had beenoverlooked in previous papers. We also found the necessary mass estimates fornew objects and updated this information for previously selected stars.Results. After a careful checking of all the collected data, we composed a newlist of 155 potential stellar perturbers of the long-period comet motion. Weapplied a new threshold of 2 pc for the minimum star-Sun distance. This listconsists of 146 single stars and nine multiple systems. For each object, wealso estimated the uncertainty of the parameters of their closest approach tothe Sun. Among these stars, we found a new potential strong past perturber, HD7977, and confirmed the plausibility of a similar action on the part of Gliese710 in the future.

Important stellar perturbers found during the StePPeD database update based on Gaia EDR3 data