diff --git a/docs/requirements.txt b/docs/requirements.txt
index 339b3723c..8dbe544d9 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -4,33 +4,64 @@
 #
 #    pip-compile docs/requirements.in
 #
-alabaster==0.7.12         # via sphinx
-babel==2.8.0              # via sphinx
-certifi==2019.11.28       # via requests
-chardet==3.0.4            # via requests
-docutils==0.15.2          # via sphinx
-idna==2.8                 # via requests
-imagesize==1.2.0          # via sphinx
-jinja2==2.10.3            # via sphinx
+alabaster==0.7.12
+    # via sphinx
+babel==2.8.0
+    # via sphinx
+certifi==2019.11.28
+    # via requests
+chardet==3.0.4
+    # via requests
+docutils==0.15.2
+    # via sphinx
+idna==2.8
+    # via requests
+imagesize==1.2.0
+    # via sphinx
+jinja2==2.10.3
+    # via sphinx
 lxml==4.4.2
-markupsafe==1.1.1         # via jinja2
-packaging==20.0           # via sphinx
-pyenchant==2.0.0          # via sphinxcontrib-spelling
-pygments==2.5.2           # via sphinx
-pyparsing==2.4.6          # via packaging
-pytz==2019.3              # via babel
-requests==2.22.0          # via sphinx
-six==1.13.0               # via packaging, sphinxcontrib-spelling
-snowballstemmer==2.0.0    # via sphinx
+    # via -r requirements.in
+markupsafe==1.1.1
+    # via jinja2
+packaging==20.0
+    # via sphinx
+pyenchant==2.0.0
+    # via sphinxcontrib-spelling
+pygments==2.5.2
+    # via sphinx
+pyparsing==2.4.6
+    # via packaging
+pytz==2019.3
+    # via babel
+requests==2.22.0
+    # via sphinx
+six==1.13.0
+    # via
+    #   packaging
+    #   sphinxcontrib-spelling
+snowballstemmer==2.0.0
+    # via sphinx
 sphinx==2.3.1
-sphinxcontrib-applehelp==1.0.1  # via sphinx
-sphinxcontrib-devhelp==1.0.1  # via sphinx
-sphinxcontrib-htmlhelp==1.0.2  # via sphinx
-sphinxcontrib-jsmath==1.0.1  # via sphinx
-sphinxcontrib-qthelp==1.0.2  # via sphinx
-sphinxcontrib-serializinghtml==1.1.3  # via sphinx
+    # via
+    #   -r requirements.in
+    #   sphinxcontrib-spelling
+sphinxcontrib-applehelp==1.0.1
+    # via sphinx
+sphinxcontrib-devhelp==1.0.1
+    # via sphinx
+sphinxcontrib-htmlhelp==1.0.2
+    # via sphinx
+sphinxcontrib-jsmath==1.0.1
+    # via sphinx
+sphinxcontrib-qthelp==1.0.2
+    # via sphinx
+sphinxcontrib-serializinghtml==1.1.3
+    # via sphinx
 sphinxcontrib-spelling==4.3.0
-urllib3==1.25.7           # via requests
+    # via -r requirements.in
+urllib3==1.25.8
+    # via requests
 
 # The following packages are considered to be unsafe in a requirements file:
 # setuptools