diff --git a/requirements.txt b/requirements.txt
index a7bfb9f..c7a5d17 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,14 +4,25 @@
 #
 #    pip-compile --output-file requirements.txt requirements.in
 #
-click==6.7                # via pip-tools
+click==6.7
+    # via pip-tools
 django==1.11.22
+    # via -r requirements.in
 djangorestframework==3.6.3
-first==2.0.1              # via pip-tools
+    # via -r requirements.in
+first==2.0.1
+    # via pip-tools
 pip-tools==1.9.0
-py==1.4.34                # via pytest
-pytest-runner==2.11.1
+    # via -r requirements.in
+py==1.4.34
+    # via pytest
 pytest==3.1.2
-pytz==2017.2              # via django
-six==1.10.0               # via pip-tools
-wheel==0.29.0
+    # via -r requirements.in
+pytest-runner==2.11.1
+    # via -r requirements.in
+pytz==2017.2
+    # via django
+six==1.10.0
+    # via pip-tools
+wheel==0.38.1
+    # via -r requirements.in