diff --git a/Dockerfile.arch b/Dockerfile.arch
index 8077375..42e68ef 100644
--- a/Dockerfile.arch
+++ b/Dockerfile.arch
@@ -5,6 +5,6 @@ RUN pacman -Syyu --noconfirm git python qt5-multimedia qt5-svg qt5-webengine qt5
                              python-dbus python-sqlalchemy python-alembic python-chardet python-lxml python-pyenchant \
                              python-beautifulsoup4 python-mako python-pytest python-pytest-cov python-websockets \
                              python-webob python-waitress python-requests python-pymediainfo python-qtawesome \
-                             python-opengl python-appdirs python-zeroconf python-pip flake8 mediainfo mupdf-tools \
-                             xorg-server-xvfb pyalpm fakeroot patch awk
+                             python-opengl python-appdirs python-zeroconf python-flask python-pip flake8 mediainfo \
+                             mupdf-tools xorg-server-xvfb pyalpm fakeroot patch awk
 RUN pip install python-vlc pysword
diff --git a/Dockerfile.debian b/Dockerfile.debian
index 9f16162..c58b61f 100644
--- a/Dockerfile.debian
+++ b/Dockerfile.debian
@@ -7,6 +7,6 @@ RUN apt-get update && DEBIAN_FRONTEND=noninteractive \
                        python3-enchant python3-bs4 python3-mako python3-uno python3-pytest python3-pytest-cov \
                        python3-websockets python3-webob python3-waitress python3-requests python3-pymediainfo \
                        python3-qtawesome python3-opengl python3-appdirs python3-vlc python3-zeroconf python3-pip \
-                       python3-flake8 flake8 mediainfo mupdf-tools xvfb
+                       python3-flake8 python3-flask flake8 mediainfo mupdf-tools xvfb
 ADD fixpaths.py /usr/bin/fixpaths
 RUN chmod a+x /usr/bin/fixpaths
diff --git a/Dockerfile.fedora b/Dockerfile.fedora
index 99aa373..82e66ac 100644
--- a/Dockerfile.fedora
+++ b/Dockerfile.fedora
@@ -5,5 +5,5 @@ RUN dnf install -y https://download1.rpmfusion.org/free/fedora/rpmfusion-free-re
 RUN dnf install -y python3-PyQt5 python3-qt5-webengine python3-sqlalchemy python3-alembic python3-beautifulsoup4 \
                    python3-chardet python3-enchant python3-lxml python3-pyxdg python3-pytest python3-websockets \
                    python3-appdirs python3-webob python3-QtAwesome python3-waitress python3-vlc python3-pymediainfo \
-                   python3-pyopengl python-pysword python3-requests python3-zeroconf python3-flake8 mediainfo patch \
-                   xorg-x11-server-Xvfb ghostscript mupdf
+                   python3-pyopengl python-pysword python3-requests python3-zeroconf python3-flake8 python3-flask \
+                   mediainfo patch xorg-x11-server-Xvfb ghostscript mupdf
diff --git a/Dockerfile.ubuntu b/Dockerfile.ubuntu
index 48b4bdd..5df2f77 100644
--- a/Dockerfile.ubuntu
+++ b/Dockerfile.ubuntu
@@ -7,4 +7,4 @@ RUN apt-get update && DEBIAN_FRONTEND=noninteractive \
                        python3-enchant python3-bs4 python3-mako python3-uno python3-pytest python3-pytest-cov \
                        python3-websockets python3-webob python3-waitress python3-requests python3-pymediainfo \
                        python3-qtawesome python3-opengl python3-appdirs python3-vlc python3-zeroconf python3-pip \
-                       python3-flake8 flake8 mediainfo mupdf-tools xvfb
+                       python3-flake8 python3-flask flake8 mediainfo mupdf-tools xvfb