diff --git a/etc/requirements.txt b/etc/requirements.txt
index 459ff55c884d2735f448f31756cecbb9eb062e45..6ff7e76898b37c778aa604fd15544fd86c654e52 100644
--- a/etc/requirements.txt
+++ b/etc/requirements.txt
@@ -30,6 +30,7 @@ Flask-Admin==1.5.8
 Flask-BS4==4.5.3.0
 Flask-Caching==1.10.1
 Flask-Cors==3.0.10
+-e git+git@git.noc.ruhr-uni-bochum.de:thomaswoehlke/flask-covid19.git@1e1fbc4007c1b8058790d53e6edfbc60c8df41ae#egg=flask_covid19
 Flask-DB==0.3.1
 flask-dictabase==1.1.3
 Flask-Fixtures==0.3.8
@@ -59,8 +60,10 @@ Mako==1.1.4
 Markdown==3.3.4
 MarkupSafe==1.1.1
 matplotlib==3.4.2
+memcache==0.5.1
 mirakuru==2.3.1
 more-itertools==8.7.0
+mysql-connector-python==8.0.25
 nodeenv==1.6.0
 numba==0.53.1
 numpy==1.20.3
@@ -82,6 +85,7 @@ port-for==0.5.0
 pre-commit==2.12.1
 prettytable==2.1.0
 prompt-toolkit==3.0.18
+protobuf==3.17.1
 psutil==5.8.0
 psycopg2-binary==2.8.6
 PTable==0.9.2
diff --git a/requirements/dev.txt b/requirements/dev.txt
index ee079ad06913f6d062cdb6bca45cc7db79157551..c3e3dc0d91ad2993583f926d3e43b5e2e3bba5d6 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -101,7 +101,7 @@ flask-login==0.5.0
     #   flask-login-dictabase-blueprint
 flask-sqlalchemy==2.5.1
     # via
-    #   -r requirements/build.in
+    #   -r requirements/dev.in
     #   flask-db
     #   flask-fixtures
     #   pytest-flask-sqlalchemy
@@ -185,12 +185,16 @@ markupsafe==1.1.1
     #   wtforms
 matplotlib==3.4.2
     # via statisticaldiagrams
+memcache==0.5.1
+    # via -r requirements/dev.in
 mirakuru==2.3.1
     # via pytest-postgresql
 more-itertools==8.7.0
     # via
     #   jaraco.functools
     #   pytest-enabler
+mysql-connector-python==8.0.25
+    # via -r requirements/dev.in
 nodeenv==1.6.0
     # via pre-commit
 numba==0.53.1
@@ -252,10 +256,10 @@ prettytable==2.1.0
     # via pyecharts
 prompt-toolkit==3.0.18
     # via click-repl
+protobuf==3.17.1
+    # via mysql-connector-python
 psutil==5.8.0
     # via mirakuru
-psycopg2-binary==2.8.6
-    # via -r requirements/dev.in
 ptable==0.9.2
     # via pip-licenses
 py2puml==0.4.0
@@ -278,8 +282,6 @@ pygments==2.9.0
     # via
     #   -r requirements/build.in
     #   sphinx
-pymysql==1.0.2
-    # via -r requirements/dev.in
 pynndescent==0.5.2
     # via -r requirements/dev.in
 pyparsing==2.4.7
@@ -363,6 +365,7 @@ six==1.16.0
     #   cycler
     #   flask-cors
     #   flask-fixtures
+    #   protobuf
     #   python-dateutil
     #   sqlalchemy-utils
     #   virtualenv
@@ -401,7 +404,7 @@ sqlalchemy-utils==0.37.3
     # via flask-db
 sqlalchemy==1.4.15
     # via
-    #   -r requirements/build.in
+    #   -r requirements/dev.in
     #   alembic
     #   dataset
     #   flask-db
diff --git a/requirements/docs.txt b/requirements/docs.txt
index 20722c0b6463518a7b1a430e40bc4a40baa67005..dea4c18dfcf050ac16ebeecf7458e1b26eb796a3 100644
--- a/requirements/docs.txt
+++ b/requirements/docs.txt
@@ -44,12 +44,8 @@ docutils==0.17.1
     #   sphinx
 filelock==3.0.12
     # via virtualenv
-flask-sqlalchemy==2.5.1
-    # via -r requirements/build.in
 flask==1.1.4
-    # via
-    #   -r requirements/build.in
-    #   flask-sqlalchemy
+    # via -r requirements/build.in
 github3.py==2.0.0
     # via sphinxcontrib-github
 greenlet==1.0.0
@@ -193,10 +189,7 @@ sphinxcontrib-qthelp==1.0.3
 sphinxcontrib-serializinghtml==1.1.4
     # via sphinx
 sqlalchemy==1.4.15
-    # via
-    #   -r requirements/build.in
-    #   alembic
-    #   flask-sqlalchemy
+    # via alembic
 tokenize-rt==4.1.0
     # via -r requirements/docs.in
 toml==0.10.2
diff --git a/requirements/tests.txt b/requirements/tests.txt
index a531e08efce773218d617c0369dbd4cfee52dbeb..c5cba54e8c7dc553aaed8dcca40b39a95a204952 100644
--- a/requirements/tests.txt
+++ b/requirements/tests.txt
@@ -44,7 +44,6 @@ flask-fixtures==0.3.8
     # via -r requirements/tests.in
 flask-sqlalchemy==2.5.1
     # via
-    #   -r requirements/build.in
     #   flask-db
     #   flask-fixtures
     #   pytest-flask-sqlalchemy
@@ -180,7 +179,6 @@ sqlalchemy-utils==0.36.8
     # via flask-db
 sqlalchemy==1.4.15
     # via
-    #   -r requirements/build.in
     #   alembic
     #   flask-db
     #   flask-sqlalchemy