diff --git a/config/php/fpm/standardebooks.org.ini b/config/php/fpm/standardebooks.org.ini
index 7083df9a..2bdca474 100644
--- a/config/php/fpm/standardebooks.org.ini
+++ b/config/php/fpm/standardebooks.org.ini
@@ -16,5 +16,8 @@ date.timezone = Etc/UTC
 [opcache]
 opcache.validate_timestamps = off
 
+[apcu]
+apc.shm_size = 64M
+
 [se]
 se.site_status = "live"