diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 794bf7eeb..6b53a6fc9 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -28,6 +28,7 @@ publish:
   only:
   - develop
   script:
+  - ./build-fork.sh
   # workaround for bug in fdroid nightly
   - sed -i "s/-debug.apk/-unsigned.apk/" /usr/lib/python3/dist-packages/fdroidserver/nightly.py
   - sed -i "s/servergitmirror = 'git@' +/servergitmirror = 'gitlab@' +/" /usr/lib/python3/dist-packages/fdroidserver/nightly.py
diff --git a/build-fork.sh b/build-fork.sh
new file mode 100755
index 000000000..18d1e39f3
--- /dev/null
+++ b/build-fork.sh
@@ -0,0 +1,17 @@
+#!/bin/sh
+
+echo "rename folders"
+
+for folder in $(find -type d -name "siacs"); do
+	newfolder="$(echo $folder | sed "s/siacs/sum7/")";
+	echo "$folder -> $newfolder"
+	mv "$folder" "$newfolder"
+done
+
+echo "fix packageing"
+for file in $(find -type f -name "*.xml" -or -name "*.java"); do
+	sed -i "s/eu.siacs./eu.sum7./" "$file"
+	echo "$file: $?"
+done
+
+sed -i "s/eu.siacs./eu.sum7./" "proguard-rules.pro"