diff --git a/dev-requirements.txt b/dev-requirements.txt
index 11f78e9..1c79f65 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -21,7 +21,7 @@ pytz==2019.2              # via babel
 requests==2.22.0          # via sphinx
 six==1.12.0               # via packaging
 snowballstemmer==1.9.0    # via sphinx
-sphinx==2.4.2
+sphinx==2.4.3
 sphinxcontrib-applehelp==1.0.1  # via sphinx
 sphinxcontrib-devhelp==1.0.1  # via sphinx
 sphinxcontrib-htmlhelp==1.0.2  # via sphinx
diff --git a/sourcedocs/requirements.txt b/sourcedocs/requirements.txt
index 17cc993..e946833 100644
--- a/sourcedocs/requirements.txt
+++ b/sourcedocs/requirements.txt
@@ -21,7 +21,7 @@ pytz==2019.2              # via babel
 requests==2.22.0          # via sphinx
 six==1.12.0               # via packaging
 snowballstemmer==1.9.1    # via sphinx
-sphinx==2.4.2
+sphinx==2.4.3
 sphinxcontrib-applehelp==1.0.1  # via sphinx
 sphinxcontrib-devhelp==1.0.1  # via sphinx
 sphinxcontrib-htmlhelp==1.0.2  # via sphinx