diff --git a/Dockerfile b/Dockerfile
index 9f89509d7..8fd83756b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,6 +4,8 @@ ENV BUILD_PACKAGES postgresql-dev graphviz-dev graphviz build-base git pkgconfig
 python3-dev libxml2-dev jpeg-dev libressl-dev libffi-dev libxslt-dev nodejs py3-lxml \
 py3-magic postgresql-client poppler-utils antiword vim
 
+RUN apk update && apk upgrade
+
 RUN apk --update add fontconfig ttf-dejavu && fc-cache -fv
 
 RUN apk add --no-cache python3 nginx tzdata && \