diff --git a/Dockerfile-alpine.template b/Dockerfile-alpine.template
index 905077bc..2fbec302 100644
--- a/Dockerfile-alpine.template
+++ b/Dockerfile-alpine.template
@@ -9,7 +9,7 @@ RUN set -ex; \
     ; \
     \
     rm /var/spool/cron/crontabs/root; \
-    echo '*/%%CRONTAB_INT%% * * * * php -f /var/www/html/cron.php' > /var/spool/cron/crontabs/www-data
+    echo '*/%%CRONTAB_INT%% * * * * php -d memory_limit=-1 -f /var/www/html/cron.php' > /var/spool/cron/crontabs/www-data
 
 # install the PHP extensions we need
 # see https://docs.nextcloud.com/server/stable/admin_manual/installation/source_installation.html
diff --git a/Dockerfile-debian.template b/Dockerfile-debian.template
index cea5d93b..b3643b1e 100644
--- a/Dockerfile-debian.template
+++ b/Dockerfile-debian.template
@@ -14,7 +14,7 @@ RUN set -ex; \
     rm -rf /var/lib/apt/lists/*; \
     \
     mkdir -p /var/spool/cron/crontabs; \
-    echo '*/%%CRONTAB_INT%% * * * * php -f /var/www/html/cron.php' > /var/spool/cron/crontabs/www-data
+    echo '*/%%CRONTAB_INT%% * * * * php -d memory_limit=-1 -f /var/www/html/cron.php' > /var/spool/cron/crontabs/www-data
 
 # install the PHP extensions we need
 # see https://docs.nextcloud.com/server/stable/admin_manual/installation/source_installation.html