diff --git a/requirements/constraints.txt b/requirements/constraints.txt
index eb013753530..4aa2ea37e3a 100644
--- a/requirements/constraints.txt
+++ b/requirements/constraints.txt
@@ -225,7 +225,7 @@ sphinxcontrib-blockdiag==3.0.0
     # via -r requirements/doc.in
 sphinxcontrib-devhelp==1.0.2
     # via sphinx
-sphinxcontrib-htmlhelp==2.0.0
+sphinxcontrib-htmlhelp==2.0.1
     # via sphinx
 sphinxcontrib-jsmath==1.0.1
     # via sphinx