diff --git a/requirements.txt b/requirements.txt
index 544fbe9..adce23b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,18 +4,41 @@
 #
 #    pip-compile --output-file requirements.txt requirements.in
 #
-certifi==2017.11.5        # via requests
-chardet==3.0.4            # via requests
-click==6.7                # via flask
+certifi==2017.11.5
+    # via requests
+chardet==3.0.4
+    # via requests
+click==6.7
+    # via flask
+configparser==4.0.2
+    # via flake8
+enum34==1.1.10
+    # via flake8
 flake8==3.5.0
+    # via -r requirements.in
 flask==0.12.2
-idna==2.6                 # via requests
-itsdangerous==0.24        # via flask
-jinja2==2.10              # via flask
-markupsafe==1.0           # via jinja2
-mccabe==0.6.1             # via flake8
-pycodestyle==2.3.1        # via flake8
+    # via -r requirements.in
+idna==2.6
+    # via requests
+itsdangerous==0.24
+    # via flask
+jinja2==2.11.3
+    # via flask
+markupsafe==1.0
+    # via jinja2
+mccabe==0.6.1
+    # via flake8
+pycodestyle==2.3.1
+    # via flake8
 pyflakes==1.6.0
+    # via
+    #   -r requirements.in
+    #   flake8
 requests==2.18.4
+    # via -r requirements.in
 urllib3==1.22
-werkzeug==0.13            # via flask
+    # via
+    #   -r requirements.in
+    #   requests
+werkzeug==0.13
+    # via flask