diff --git a/xpra.changes b/xpra.changes
index ea05ec7..6d1f601 100644
--- a/xpra.changes
+++ b/xpra.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Wed Aug 19 12:58:54 UTC 2020 - Luigi Baldoni <aloisio@gmx.com>
+
+- Use proper location of bash in script shebang
+- Add runtime requirement
+
 -------------------------------------------------------------------
 Wed Aug 19 09:20:53 UTC 2020 - Dominique Leuenberger <dimstar@opensuse.org>
 
diff --git a/xpra.spec b/xpra.spec
index d220be9..327332c 100644
--- a/xpra.spec
+++ b/xpra.spec
@@ -63,6 +63,7 @@ Requires:       gstreamer-plugins-good
 Requires:       pulseaudio
 Requires:       pulseaudio-utils
 Requires:       python3-Pillow
+Requires:       python3-cairo
 Requires:       python3-dbus-python
 Requires:       python3-gobject-Gdk
 Requires:       python3-gst
@@ -119,6 +120,7 @@ connections, and also the xpra html5 client.
 find -name '*.py' \
      -exec sed -i '1{\@^#!/usr/bin/env python@d}' {} +
 sed -i "1 s|^#!/usr/bin/env python\b|#!%__python3|" cups/xpraforwarder
+sed -i "1 s|^/usr/bin/bash|#!$(which bash)|" scripts/xpra_udev_product_version
 install -m0644 %{SOURCE1} -t xdg
 # set fillup dir
 sed -e 's|__FILLUPDIR__|%{_fillupdir}|' \