diff --git a/Dockerfile b/Dockerfile
index 135c2ae..496726c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -31,6 +31,7 @@ RUN \
     libxml2-dev \
     libxslt1-dev \
     libzmq3-dev \
+    libmagic-dev \
     curl \
     file \
     git \
@@ -78,7 +79,8 @@ RUN python3 -m venv /app \
      && pip3 install --no-cache ldap3 \
      && pip3 install --no-cache flask-ldap3-login \
      && pip3 install --no-cache --upgrade tzdata \
-     && pip3 install --no-cache --upgrade netifaces-plus
+     && pip3 install --no-cache --upgrade netifaces-plus \
+     && pip3 install --no-cache python-magic 
 
 RUN echo "**** download calibre-web ****" 1>&2 \
      && if [ -z ${CALIBREWEB_RELEASE} ]; then \
@@ -144,6 +146,7 @@ RUN apt-get install --no-install-recommends -y \
     libsasl2-2 \
     libxml2 \
     libxslt1.1 \
+    libmagic1 \
     ca-certificates \
     imagemagick \
     calibre \