diff --git a/docs_requirements.txt b/docs_requirements.txt
index 12d7f7c60dd..3698fabfccb 100644
--- a/docs_requirements.txt
+++ b/docs_requirements.txt
@@ -64,7 +64,7 @@ scipy==1.5.4
 Send2Trash==1.5.0
 six==1.15.0
 snowballstemmer==2.0.0
-Sphinx==3.3.1
+Sphinx==3.4.0
 sphinx-jsonschema==1.16.6
 sphinx-rtd-theme==0.5.0
 sphinxcontrib-applehelp==1.0.2
diff --git a/science_requirements.txt b/science_requirements.txt
index 767f6f7487f..ccfb3eeec63 100644
--- a/science_requirements.txt
+++ b/science_requirements.txt
@@ -91,7 +91,7 @@ rope==0.18.0
 six==1.15.0
 snowballstemmer==2.0.0
 sortedcontainers==2.3.0
-Sphinx==3.3.1
+Sphinx==3.4.0
 sphinxcontrib-applehelp==1.0.2
 sphinxcontrib-devhelp==1.0.2
 sphinxcontrib-htmlhelp==1.0.3