debian/changelog

+invesalius (3.1.99992-3) unstable; urgency=medium
+
+  * Force Python3 >= 3.7 (its also python3-dev rather than python3-all-dev)
+    Closes: #927387
+  * Standards-Version: 4.3.0
+
+ -- Andreas Tille <tille@debian.org>  Tue, 23 Apr 2019 21:50:01 +0200
+
 invesalius (3.1.99992-2) unstable; urgency=medium
 
   * Patch to remove python2 prints

debian/control

@@ -5,12 +5,12 @@ Uploaders: Andreas Tille <tille@debian.org>,
 Section: graphics
 Priority: optional
 Build-Depends: debhelper (>= 11~),
-               python3-all-dev,
+               python3-dev (>= 3.7~),
                cython3,
                dh-python,
                python3-numpy
-Build-Depends-Indep: python3
-Standards-Version: 4.2.0
+Build-Depends-Indep: python3 (>= 3.7~)
+Standards-Version: 4.3.0
 Vcs-Browser: https://salsa.debian.org/med-team/invesalius
 Vcs-Git: https://salsa.debian.org/med-team/invesalius.git
 Homepage: http://www.cti.gov.br/invesalius/