diff --git a/db/Dockerfile b/db/Dockerfile
index bcf40e6f..f0fe8605 100644
--- a/db/Dockerfile
+++ b/db/Dockerfile
@@ -3,7 +3,8 @@ MAINTAINER Piero Toffanin <pt@masseranolabs.com>
 
 ENV POSTGIS_MAJOR 2.3
 
-RUN echo "deb http://deb.debian.org/debian "$(lsb_release --codename | cut -f2)"-backports main" >> /etc/apt/sources.list \
+RUN . /etc/os-release \
+      && echo "deb http://deb.debian.org/debian "$VERSION_CODENAME"-backports main" >> /etc/apt/sources.list \
 	  && apt-get update \
       && apt-get install -y --no-install-recommends \
            postgresql-$PG_MAJOR-postgis-$POSTGIS_MAJOR \
diff --git a/requirements.txt b/requirements.txt
index b1a7366b..d7f2c767 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -32,7 +32,7 @@ openapi-codec==1.1.7
 packaging==16.8
 piexif==1.0.13
 pilkit==2.0
-Pillow==4.3.0
+Pillow==6.2.0
 pip-autoremove==0.9.0
 psycopg2==2.7.4
 psycopg2-binary==2.7.4