--- config/configure.orig	2021-01-09 22:11:10 UTC
+++ config/configure
@@ -66,6 +66,7 @@ expr "$MAKE_VERSION" '>=' '3.81' || AC_FAIL "ERROR: $M
 AC_SUB bup_make "$MAKE"
 
 bup_python="$(type -p "$PYTHON")"
+test -z "$bup_python" && bup_python="$(bup_find_prog python3.9 '')"
 test -z "$bup_python" && bup_python="$(bup_find_prog python3.8 '')"
 test -z "$bup_python" && bup_python="$(bup_find_prog python3.7 '')"
 test -z "$bup_python" && bup_python="$(bup_find_prog python3.6 '')"
