diff --git a/requirements-dev.txt b/requirements-dev.txt
index 5a1ca159..136d7457 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,19 +1,20 @@
-pallets-sphinx-themes
-Sphinx
-sphinx-issues
 mock==2.0.0
-nose2[coverage_plugin]
+nose2[coverage_plugin]==0.9.2
 cov-core==1.15.0
 pep8==1.7.0
-pylint
+pylint==2.4.4
 plone.testing==5.0.0
 splinter==0.11.0
 transifex-client==0.12.2
 unittest2==1.1.0
 zope.testrunner==4.5.1
 selenium==3.141.0
-linuxdoc @ git+http://github.com/return42/linuxdoc.git
-sphinx-jinja
-sphinx-tabs
-sphinxcontrib-programoutput
-twine
+twine==3.2.0; python_version >= "3.6"
+twine==1.15.0; python_version < "3.6"
+Pallets-Sphinx-Themes==1.2.3
+Sphinx==3.0.1
+sphinx-issues==1.2.0
+sphinx-jinja==1.1.1
+sphinx-tabs==1.1.13
+sphinxcontrib-programoutput==0.16
+linuxdoc @ git+http://github.com/return42/linuxdoc.git@70673dcf69e705e08d81f53794895dc15c4920b3#egg=linuxdoc