diff -Nru a/bin/kazam b/bin/kazam
--- a/bin/kazam	2014-08-18 18:48:36.000000000 +0200
+++ b/bin/kazam	2016-09-12 14:03:51.549251318 +0200
@@ -22,6 +22,7 @@
 #       MA 02110-1301, USA.
 
 import os
+import gi
 import sys
 import dbus
 import logging
@@ -29,6 +30,7 @@
 from argparse import ArgumentParser
 from dbus.mainloop.glib import DBusGMainLoop
 
+gi.require_version('Gtk', '3.0')
 from gi.repository import Gtk
 
 class KazamService(dbus.service.Object):
diff -Nru a/kazam/backend/gstreamer.py b/kazam/backend/gstreamer.py
--- a/kazam/backend/gstreamer.py	2014-08-18 18:48:36.000000000 +0200
+++ b/kazam/backend/gstreamer.py	2016-09-12 14:08:51.404345924 +0200
@@ -20,6 +20,7 @@
 #       MA 02110-1301, USA.
 
 import os
+import gi
 import logging
 logger = logging.getLogger("GStreamer")
 
@@ -32,6 +33,7 @@
 os.environ["GST_DEBUG_DUMP_DOT_DIR"] = "/tmp"
 os.putenv("GST_DEBUG_DUMP_DOT_DIR", "/tmp")
 
+gi.require_version('Gst', '1.0')
 from gi.repository import GObject, Gst
 
 from kazam.backend.prefs import *
diff -Nru a/kazam/frontend/indicator.py b/kazam/frontend/indicator.py
--- a/kazam/frontend/indicator.py	2014-08-18 18:48:36.000000000 +0200
+++ b/kazam/frontend/indicator.py	2016-09-12 14:29:59.000000000 +0200
@@ -94,6 +94,8 @@
         # Setup keybindings - Hardcore way
         #
         try:
+            import gi
+            gi.require_version('Keybinder', '3.0')
             from gi.repository import Keybinder
             logger.debug("Trying to bind hotkeys.")
             Keybinder.init()
diff -Nru a/kazam/frontend/window_area.py b/kazam/frontend/window_area.py
--- a/kazam/frontend/window_area.py	2014-08-18 18:48:36.000000000 +0200
+++ b/kazam/frontend/window_area.py	2016-09-12 14:22:51.747845480 +0200
@@ -19,6 +19,7 @@
 #       Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 #       MA 02110-1301, USA.
 
+import gi
 import time
 import cairo
 import math
@@ -27,6 +28,7 @@
 
 from gettext import gettext as _
 
+gi.require_version('Wnck', '3.0')
 from gi.repository import Gtk, GObject, Gdk, Wnck, GdkX11
 
 from kazam.backend.prefs import *
diff -Nrup a/kazam/backend/prefs.py b/kazam/backend/prefs.py
--- a/kazam/backend/prefs.py	2014-08-18 18:48:36.000000000 +0200
+++ b/kazam/backend/prefs.py	2021-02-19 10:10:24.531555901 +0100
@@ -20,6 +20,7 @@
 #       MA 02110-1301, USA.
 
 import os
+import gi
 import logging
 from os.path import expanduser
 from gettext import gettext as _
@@ -339,6 +340,7 @@ class hw:
 
 def detect_codecs():
     logger = logging.getLogger("Prefs-DC")
+    gi.require_version('Gst', '1.0')
     from gi.repository import Gst
 
     Gst.init(None)