Current version of Matomo: 3.9.1-3
https://matomo.org/changelog/matomo-3-10-0/ ("This release does not contain any major database upgrade.")
https://matomo.org/changelog/matomo-3-11-0/ ("This release does not contain any major database upgrade.")
Mentioned in SAL (#wikimedia-operations) [2019-10-14T14:28:16Z] <elukey> upload matomo 3.11 to stretch-wikimedia and upgrade matomo1001 - T234607
@Nuria matomo1001 has been upgraded with the latest upstream version. From a quick check everything looks ok, can you check as well?