diff --git a/requirements.txt b/requirements.txt
index 47365ee..57e67ad 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,34 +5,69 @@
 #    pip-compile --output-file requirements.txt requirements.in
 #
 certifi==2017.1.23
-cffi==1.9.1               # via cryptography
+    # via -r requirements.in
+cffi==1.9.1
+    # via cryptography
 contexttimer==0.3.3
+    # via -r requirements.in
 cryptography==1.7.2
-cycler==0.10.0            # via matplotlib
-enum34==1.1.6             # via cryptography
-functools32==3.2.3.post2  # via matplotlib
-futures==3.0.5            # via requests-futures
-gitdb2==2.0.0             # via gitpython
+    # via
+    #   -r requirements.in
+    #   pyopenssl
+cycler==0.10.0
+    # via matplotlib
+gitdb2==2.0.0
+    # via gitpython
 gitpython==2.1.1
+    # via -r requirements.in
 idna==2.2
-ipaddress==1.0.18         # via cryptography
+    # via
+    #   -r requirements.in
+    #   cryptography
 matplotlib==2.0.0
+    # via -r requirements.in
 mpld3==0.3
+    # via -r requirements.in
 numpy==1.10.4
-pyasn1==0.2.2             # via cryptography
-pycparser==2.17           # via cffi
+    # via
+    #   -r requirements.in
+    #   matplotlib
+    #   scipy
+pyasn1==0.2.2
+    # via cryptography
+pycparser==2.17
+    # via cffi
 pyopenssl==16.2.0
-pyparsing==2.1.10         # via matplotlib
+    # via -r requirements.in
+pyparsing==2.1.10
+    # via matplotlib
 python-dateutil==2.5.1
-pytz==2016.4              # via matplotlib
-pyyaml==3.12
+    # via
+    #   -r requirements.in
+    #   matplotlib
+pytz==2016.4
+    # via matplotlib
+pyyaml==5.4
+    # via -r requirements.in
 requests-futures==0.9.7
+    # via -r requirements.in
 requests==2.13.0
+    # via
+    #   -r requirements.in
+    #   requests-futures
 scipy==0.17.0
-six==1.10.0               # via cryptography, cycler, matplotlib, pyopenssl, python-dateutil
-smmap2==2.0.1             # via gitdb2
-subprocess32==3.2.7       # via matplotlib
+    # via -r requirements.in
+six==1.10.0
+    # via
+    #   cryptography
+    #   cycler
+    #   matplotlib
+    #   pyopenssl
+    #   python-dateutil
+smmap2==2.0.1
+    # via gitdb2
 tqdm==4.11.2
+    # via -r requirements.in
 
 # The following packages are considered to be unsafe in a requirements file:
-# setuptools                # via cryptography
+# setuptools