diff --git a/helpers/make-python-apt b/helpers/make-python-apt
index 7b95c70..e5fef0c 100644
--- a/helpers/make-python-apt
+++ b/helpers/make-python-apt
@@ -25,7 +25,7 @@ COMPONENT=main
 . ./config
 
 # Fix version number due to early release.
-export FULLVERSION="$(sed 's|ubuntu3||' <<< $FULLVERSION)"
+export FULLVERSION="$(sed 's|ubuntu4||' <<< $FULLVERSION)"
 
 # https://en.wikipedia.org/wiki/ISO_3166-2
 cat << EOF > data/templates/Trisquel.mirrors