diff --git a/piwik/Dockerfile b/piwik/Dockerfile
index 67a4817..b55d2ad 100644
--- a/piwik/Dockerfile
+++ b/piwik/Dockerfile
@@ -35,6 +35,7 @@ RUN echo "@testing https://nl.alpinelinux.org/alpine/edge/testing" >> /etc/apk/r
     php7-openssl@testing \
     php7-mysqli@testing \
     php7-mysqlnd@testing \
+    php7-pdo@testing \
     php7-pdo_mysql@testing \
     php7-dev@testing \
     php7-pear@testing \