diff --git a/Dockerfile-alpine.template b/Dockerfile-alpine.template
index 7511056c..571d5952 100644
--- a/Dockerfile-alpine.template
+++ b/Dockerfile-alpine.template
@@ -39,6 +39,7 @@ RUN set -ex; \
     docker-php-ext-install -j "$(nproc)" \
         bcmath \
         exif \
+        fileinfo \
         gd \
         intl \
         ldap \