diff --git a/data/Dockerfiles/netfilter/Dockerfile b/data/Dockerfiles/netfilter/Dockerfile
index ad121a8b..9dbb9b16 100644
--- a/data/Dockerfiles/netfilter/Dockerfile
+++ b/data/Dockerfiles/netfilter/Dockerfile
@@ -1,8 +1,12 @@
 FROM alpine:3.6
 LABEL maintainer "Andre Peters <andre.peters@servercow.de>"
 
+ENV XTABLES_LIBDIR /usr/lib/xtables
+ENV PYTHON_IPTABLES_XTABLES_VERSION 12
+ENV IPTABLES_LIBDIR /usr/lib
+
 RUN apk add -U python2 python-dev py-pip gcc musl-dev iptables ip6tables \
-  && pip2 install --upgrade python-iptables==0.12.0 redis ipaddress \
+  && pip2 install --upgrade python-iptables==0.13.0 redis ipaddress \
   && apk del python-dev py2-pip gcc
 
 COPY server.py /