diff --git a/.readthedocs.yml b/.readthedocs.yml
index 5a415d4c43ca2b055810acb4432c17db44ecafc5..fab47a3fde7fed3e5bb33b820eab79db8df115f3 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -15,7 +15,6 @@ formats:
 python:
   version: 3.7
   install:
-    - requirements:  requirements_dev.txt
     - requirements:  doc/source/requirements.txt
 
 
diff --git a/doc/source/conf.py b/doc/source/conf.py
index 92c9d35608f1cc6817a87c2b85b18694336b92ac..6f2c9f2461c2ff58cced9764e8decb3ae4c1a6f7 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -22,7 +22,7 @@ import mock
 
 
 if True:
-    MOCK_MODULES = ['qgis', 'qgis.core', 'qgis.gui', 'qgis.utils', 'numpy', 'scipy',
+    MOCK_MODULES = ['qgis', 'qgis.core', 'qgis.gui', 'qgis.utils', 'numpy', 'scipy', 'osgeo', 'gdal',
                 'vrtbuilder', 'vrtbuilder.virtualrasters',
                 'qgis.PyQt', 'qgis.PyQt.Qt', 'qgis.PyQt.QtCore', 'qgis.PyQt.QtGui', 'qgis.PyQt.QtWidgets', 'qgis.PyQt.QtXml',
                 'processing', 'processing.core', 'processing.core.ProcessingConfig']