diff --git a/requirements_docs.txt b/requirements_docs.txt
index 032bbbbfb01..b147fcca7a7 100644
--- a/requirements_docs.txt
+++ b/requirements_docs.txt
@@ -1,3 +1,3 @@
-Sphinx==1.5.4
+Sphinx==1.5.5
 sphinx-autodoc-typehints==1.2.0
 sphinx-autodoc-annotation==1.0.post1