diff --git a/doc/requirements.pip b/doc/requirements.pip
index 3529fba32..c102984a5 100644
--- a/doc/requirements.pip
+++ b/doc/requirements.pip
@@ -9,4 +9,5 @@ sphinx-rst-builder==0.0.1
 sphinxcontrib-spelling==4.3.0
 sphinx_rtd_theme==0.4.3
 sphinx-autobuild==0.7.1
-sphinx-tabs==1.1.13
+# Our own fork that allows linkcheck to work:
+git+https://github.com/nedbat/sphinx-tabs.git@master#egg=sphinx-tabs