diff --git a/tildes/mypy.ini b/tildes/mypy.ini
index 4ac6f8b..d8c1e9c 100644
--- a/tildes/mypy.ini
+++ b/tildes/mypy.ini
@@ -3,3 +3,6 @@ mypy_path = /opt/tildes/stubs/
 disallow_untyped_defs = true
 ignore_missing_imports = true
 no_implicit_optional = true
+
+[mypy-tests.*]
+disallow_untyped_defs = false
diff --git a/tildes/requirements.txt b/tildes/requirements.txt
index a43f9ad..c1d96ef 100644
--- a/tildes/requirements.txt
+++ b/tildes/requirements.txt
@@ -17,24 +17,26 @@ Click==7.0
 cornice==3.5.1
 decorator==4.4.0
 dodgy==0.1.9
-freezegun==0.3.11
+freezegun==0.3.12
 gunicorn==19.9.0
 html5lib==1.0.1
 hupper==1.6.1
 idna==2.8
+importlib-metadata==0.17
 ipython==7.5.0
 ipython-genutils==0.2.0
-isort==4.3.18
+isort==4.3.20
 jedi==0.13.3
 Jinja2==2.10.1
-lazy-object-proxy==1.4.0
-Mako==1.0.9
+lazy-object-proxy==1.4.1
+Mako==1.0.11
 MarkupSafe==1.1.1
 marshmallow==2.19.2
 mccabe==0.6.1
 more-itertools==7.0.0
 mypy==0.670
 mypy-extensions==0.4.1
+packaging==19.0
 parso==0.4.0
 PasteDeploy==2.0.1
 pep8-naming==0.4.1
@@ -43,7 +45,7 @@ pickleshare==0.7.5
 Pillow==6.0.0
 plaster==1.0
 plaster-pastedeploy==0.7
-pluggy==0.11.0
+pluggy==0.12.0
 prometheus-client==0.6.0
 prompt-toolkit==2.0.9
 prospector==1.1.6.2
@@ -55,14 +57,15 @@ pycodestyle==2.4.0
 pycparser==2.19
 pydocstyle==3.0.0
 pyflakes==1.6.0
-pygit2==0.28.1
-Pygments==2.4.0
+pygit2==0.28.2
+Pygments==2.4.2
 pylint==2.1.1
 pylint-celery==0.3
 pylint-django==2.0.2
 pylint-flask==0.5
 pylint-plugin-utils==0.5
 pyotp==2.2.7
+pyparsing==2.4.0
 pyramid==1.10.4
 pyramid-debugtoolbar==4.5
 pyramid-ipython==0.2
@@ -71,7 +74,7 @@ pyramid-mako==1.0.2
 pyramid-session-redis==1.5.0
 pyramid-tm==2.2.1
 pyramid-webassets==0.10
-pytest==4.4.2
+pytest==4.6.1
 pytest-mock==1.10.4
 python-dateutil==2.8.0
 python-editor==1.0.4
@@ -79,17 +82,17 @@ PyYAML==5.1
 qrcode==6.1
 redis==3.2.1
 repoze.lru==0.7
-requests==2.21.0
+requests==2.22.0
 requirements-detector==0.6
-sentry-sdk==0.7.14
+sentry-sdk==0.8.1
 setoptconf==0.2.0
 simplejson==3.16.0
 six==1.12.0
 snowballstemmer==1.2.1
 soupsieve==1.9.1
-SQLAlchemy==1.3.3
+SQLAlchemy==1.3.4
 SQLAlchemy-Utils==0.33.11
-stripe==2.27.0
+stripe==2.29.3
 testing.common.database==2.0.3
 testing.redis==1.1.1
 titlecase==0.12.0
@@ -98,7 +101,7 @@ traitlets==4.3.2
 transaction==2.4.0
 translationstring==1.3
 typed-ast==1.3.5
-urllib3==1.24.3
+urllib3==1.25.3
 venusian==1.2.0
 waitress==1.3.0
 wcwidth==0.1.7
@@ -108,6 +111,7 @@ webencodings==0.5.1
 WebOb==1.8.5
 WebTest==2.0.33
 wrapt==1.11.1
+zipp==0.5.1
 zope.deprecation==4.4.0
 zope.interface==4.6.0
 zope.sqlalchemy==1.1
diff --git a/tildes/tests/__init__.py b/tildes/tests/__init__.py
new file mode 100644
index 0000000..b8e8e5d
--- /dev/null
+++ b/tildes/tests/__init__.py
@@ -0,0 +1 @@
+"""Contains the app's tests (run with pytest)."""