diff --git a/requirements-dev.txt b/requirements-dev.txt
index fcf0fe3..329ab1f 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -4,34 +4,114 @@
 #
 #    make update-requirements
 #
-appdirs==1.4.3            # via black
-atomicwrites==1.3.0       # via pytest
-attrs==19.1.0             # via black, pytest
+appdirs==1.4.3
+    # via black
+atomicwrites==1.3.0
+    # via pytest
+attrs==19.1.0
+    # via
+    #   black
+    #   pytest
 black==19.3b0
+    # via -r requirements-dev.in
 click==7.0
+    # via
+    #   -r requirements.txt
+    #   black
+    #   flask
+    #   pip-tools
+    #   provit
 colorama==0.4.1
-coverage==4.5.3           # via pytest-cov
+    # via -r requirements.txt
+coverage==4.5.3
+    # via pytest-cov
 flask-cors==3.0.8
+    # via
+    #   -r requirements.txt
+    #   provit
 flask==1.0.3
-importlib-metadata==0.18  # via pluggy, pytest
+    # via
+    #   -r requirements.txt
+    #   flask-cors
+    #   provit
+importlib-metadata==0.18
+    # via
+    #   pluggy
+    #   pytest
 isodate==0.6.0
+    # via
+    #   -r requirements.txt
+    #   provit
+    #   rdflib
 itsdangerous==1.1.0
+    # via
+    #   -r requirements.txt
+    #   flask
+    #   provit
 jinja2==2.10.1
+    # via
+    #   -r requirements.txt
+    #   flask
+    #   provit
 markupsafe==1.1.1
-more-itertools==7.0.0     # via pytest
-packaging==19.0           # via pytest
+    # via
+    #   -r requirements.txt
+    #   jinja2
+    #   provit
+more-itertools==7.0.0
+    # via pytest
+packaging==19.0
+    # via pytest
 pip-tools==3.8.0
-pluggy==0.12.0            # via pytest
+    # via -r requirements-dev.in
+pluggy==0.12.0
+    # via pytest
 provit==1.0.2
-py==1.8.0                 # via pytest
+    # via -r requirements.txt
+py==1.10.0
+    # via pytest
 pyparsing==2.4.0
+    # via
+    #   -r requirements.txt
+    #   packaging
+    #   provit
+    #   rdflib
 pytest-cov==2.7.1
+    # via -r requirements-dev.in
 pytest==4.6.3
+    # via
+    #   -r requirements-dev.in
+    #   pytest-cov
 pyyaml==5.1.1
+    # via
+    #   -r requirements.txt
+    #   provit
 rdflib-jsonld==0.4.0
+    # via
+    #   -r requirements.txt
+    #   provit
 rdflib==4.2.2
+    # via
+    #   -r requirements.txt
+    #   provit
+    #   rdflib-jsonld
 six==1.12.0
-toml==0.10.0              # via black
-wcwidth==0.1.7            # via pytest
+    # via
+    #   -r requirements.txt
+    #   flask-cors
+    #   isodate
+    #   packaging
+    #   pip-tools
+    #   provit
+    #   pytest
+toml==0.10.0
+    # via black
+wcwidth==0.1.7
+    # via pytest
 werkzeug==0.15.4
-zipp==0.5.1               # via importlib-metadata
+    # via
+    #   -r requirements.txt
+    #   flask
+    #   provit
+zipp==0.5.1
+    # via importlib-metadata