diff --git a/docs/requirements.txt b/docs/requirements.txt
index 6375044..557b354 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -14,7 +14,7 @@ alabaster==0.7.12
     # via sphinx
 attrs==19.1.0
     # via packaging
-babel==2.7.0
+babel==2.9.1
     # via sphinx
 certifi==2019.6.16
     # via requests
@@ -35,9 +35,7 @@ markupsafe==1.1.1
 packaging==19.1
     # via sphinx
 pygments==2.7.4
-    # via
-    #   pygments-cl-repl
-    #   sphinx
+    # via sphinx
 pyparsing==2.4.2
     # via packaging
 pytz==2019.2
@@ -48,12 +46,12 @@ six==1.12.0
     # via packaging
 snowballstemmer==1.9.0
     # via sphinx
-sphinx-bootstrap-theme==0.7.1
-    # via -r requirements.in
 sphinx==2.2.0
     # via
     #   -r requirements.in
     #   sphinxcontrib-cldomain
+sphinx-bootstrap-theme==0.7.1
+    # via -r requirements.in
 sphinxcontrib-applehelp==1.0.1
     # via sphinx
 sphinxcontrib-devhelp==1.0.1