diff --git a/Dockerfile b/Dockerfile
index 674a23e..87f629b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM thallian/php7-fpm:latest
 
-RUN apk add --no-cache openssl tar nginx postgresql-client aspell rsyslog
+RUN apk add --no-cache openssl tar nginx postgresql-client aspell rsyslog ca-certificates
 
 RUN apk add --no-cache --repository http://dl-3.alpinelinux.org/alpine/edge/main/ --allow-untrusted \
     libressl2.4-libcrypto \