diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 3f02c797..19e3e819 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -394,6 +394,7 @@ plugin_fetchsrclibs:
         python3-cffi
         python3-cryptography
         python3-pip
+        python3-pil
         python3-venv
     - python3 -m venv --system-site-packages env
     - . env/bin/activate
diff --git a/fdroidserver/rewritemeta.py b/fdroidserver/rewritemeta.py
index a6406cb9..0437469b 100644
--- a/fdroidserver/rewritemeta.py
+++ b/fdroidserver/rewritemeta.py
@@ -51,7 +51,7 @@ def main():
     parser = ArgumentParser()
     common.setup_global_opts(parser)
     parser.add_argument("-l", "--list", action="store_true", default=False,
-                        help=_("List files that would be reformatted"))
+                        help=_("List files that would be reformatted (dry run)"))
     parser.add_argument("appid", nargs='*', help=_("application ID of file to operate on"))
     metadata.add_metadata_arguments(parser)
     options = parser.parse_args()