Hello. > debhelper 13.11.4 > dh-ada-library 8.6 > gnat-10 10.2.1-6
> $ dh_ada_library --export-versions > DEB_GNAT_VERSION:=GNATMAKE 10.2.1 20210110 I failed to reproduce your issue with debhelper 13.11.10 dh-ada-library 8.6 gnat-10 10.5.0-2 That is, the output is DEB_GNAT_VERSION:=10 Can you reproduce the issue? Which version of the 'gnat' package is involved, if any? Also, in which source tree/commit are you executing dh_ada_library? One could imagine a problem while parsing debian/control.