diff --git a/25/apache/Dockerfile b/25/apache/Dockerfile
index 2c27d014..6820aa51 100644
--- a/25/apache/Dockerfile
+++ b/25/apache/Dockerfile
@@ -21,6 +21,7 @@ RUN set -ex; \
 # see https://docs.nextcloud.com/server/stable/admin_manual/installation/source_installation.html
 ENV PHP_MEMORY_LIMIT 512M
 ENV PHP_UPLOAD_LIMIT 512M
+ENV PHP_PM_MAX_CHILDREN 16
 RUN set -ex; \
     \
     savedAptMark="$(apt-mark showmanual)"; \
@@ -108,6 +109,7 @@ RUN { \
         echo 'memory_limit=${PHP_MEMORY_LIMIT}'; \
         echo 'upload_max_filesize=${PHP_UPLOAD_LIMIT}'; \
         echo 'post_max_size=${PHP_UPLOAD_LIMIT}'; \
+        echo 'pm.max_children = ${PHP_PM_MAX_CHILDREN}'; \
     } > "${PHP_INI_DIR}/conf.d/nextcloud.ini"; \
     \
     mkdir /var/www/data; \
diff --git a/25/fpm/Dockerfile b/25/fpm/Dockerfile
index 910f54d3..9d657f6b 100644
--- a/25/fpm/Dockerfile
+++ b/25/fpm/Dockerfile
@@ -21,6 +21,7 @@ RUN set -ex; \
 # see https://docs.nextcloud.com/server/stable/admin_manual/installation/source_installation.html
 ENV PHP_MEMORY_LIMIT 512M
 ENV PHP_UPLOAD_LIMIT 512M
+ENV PHP_PM_MAX_CHILDREN 16
 RUN set -ex; \
     \
     savedAptMark="$(apt-mark showmanual)"; \
@@ -108,6 +109,7 @@ RUN { \
         echo 'memory_limit=${PHP_MEMORY_LIMIT}'; \
         echo 'upload_max_filesize=${PHP_UPLOAD_LIMIT}'; \
         echo 'post_max_size=${PHP_UPLOAD_LIMIT}'; \
+        echo 'pm.max_children = ${PHP_PM_MAX_CHILDREN}'; \
     } > "${PHP_INI_DIR}/conf.d/nextcloud.ini"; \
     \
     mkdir /var/www/data; \
diff --git a/26/apache/Dockerfile b/26/apache/Dockerfile
index a6b125cf..36d20dc8 100644
--- a/26/apache/Dockerfile
+++ b/26/apache/Dockerfile
@@ -21,6 +21,7 @@ RUN set -ex; \
 # see https://docs.nextcloud.com/server/stable/admin_manual/installation/source_installation.html
 ENV PHP_MEMORY_LIMIT 512M
 ENV PHP_UPLOAD_LIMIT 512M
+ENV PHP_PM_MAX_CHILDREN 16
 RUN set -ex; \
     \
     savedAptMark="$(apt-mark showmanual)"; \
@@ -109,6 +110,7 @@ RUN { \
         echo 'memory_limit=${PHP_MEMORY_LIMIT}'; \
         echo 'upload_max_filesize=${PHP_UPLOAD_LIMIT}'; \
         echo 'post_max_size=${PHP_UPLOAD_LIMIT}'; \
+        echo 'pm.max_children = ${PHP_PM_MAX_CHILDREN}'; \
     } > "${PHP_INI_DIR}/conf.d/nextcloud.ini"; \
     \
     mkdir /var/www/data; \
diff --git a/26/fpm/Dockerfile b/26/fpm/Dockerfile
index e3608e6e..e1548088 100644
--- a/26/fpm/Dockerfile
+++ b/26/fpm/Dockerfile
@@ -21,6 +21,7 @@ RUN set -ex; \
 # see https://docs.nextcloud.com/server/stable/admin_manual/installation/source_installation.html
 ENV PHP_MEMORY_LIMIT 512M
 ENV PHP_UPLOAD_LIMIT 512M
+ENV PHP_PM_MAX_CHILDREN 16
 RUN set -ex; \
     \
     savedAptMark="$(apt-mark showmanual)"; \
@@ -109,6 +110,7 @@ RUN { \
         echo 'memory_limit=${PHP_MEMORY_LIMIT}'; \
         echo 'upload_max_filesize=${PHP_UPLOAD_LIMIT}'; \
         echo 'post_max_size=${PHP_UPLOAD_LIMIT}'; \
+        echo 'pm.max_children = ${PHP_PM_MAX_CHILDREN}'; \
     } > "${PHP_INI_DIR}/conf.d/nextcloud.ini"; \
     \
     mkdir /var/www/data; \
diff --git a/27/apache/Dockerfile b/27/apache/Dockerfile
index 5fb93a29..d62295fa 100644
--- a/27/apache/Dockerfile
+++ b/27/apache/Dockerfile
@@ -21,6 +21,7 @@ RUN set -ex; \
 # see https://docs.nextcloud.com/server/stable/admin_manual/installation/source_installation.html
 ENV PHP_MEMORY_LIMIT 512M
 ENV PHP_UPLOAD_LIMIT 512M
+ENV PHP_PM_MAX_CHILDREN 16
 RUN set -ex; \
     \
     savedAptMark="$(apt-mark showmanual)"; \
@@ -109,6 +110,7 @@ RUN { \
         echo 'memory_limit=${PHP_MEMORY_LIMIT}'; \
         echo 'upload_max_filesize=${PHP_UPLOAD_LIMIT}'; \
         echo 'post_max_size=${PHP_UPLOAD_LIMIT}'; \
+        echo 'pm.max_children = ${PHP_PM_MAX_CHILDREN}'; \
     } > "${PHP_INI_DIR}/conf.d/nextcloud.ini"; \
     \
     mkdir /var/www/data; \
diff --git a/27/fpm/Dockerfile b/27/fpm/Dockerfile
index d183f371..c8f69ca3 100644
--- a/27/fpm/Dockerfile
+++ b/27/fpm/Dockerfile
@@ -21,6 +21,7 @@ RUN set -ex; \
 # see https://docs.nextcloud.com/server/stable/admin_manual/installation/source_installation.html
 ENV PHP_MEMORY_LIMIT 512M
 ENV PHP_UPLOAD_LIMIT 512M
+ENV PHP_PM_MAX_CHILDREN 16
 RUN set -ex; \
     \
     savedAptMark="$(apt-mark showmanual)"; \
@@ -109,6 +110,7 @@ RUN { \
         echo 'memory_limit=${PHP_MEMORY_LIMIT}'; \
         echo 'upload_max_filesize=${PHP_UPLOAD_LIMIT}'; \
         echo 'post_max_size=${PHP_UPLOAD_LIMIT}'; \
+        echo 'pm.max_children = ${PHP_PM_MAX_CHILDREN}'; \
     } > "${PHP_INI_DIR}/conf.d/nextcloud.ini"; \
     \
     mkdir /var/www/data; \
diff --git a/Dockerfile-debian.template b/Dockerfile-debian.template
index cea5d93b..ebd9b17e 100644
--- a/Dockerfile-debian.template
+++ b/Dockerfile-debian.template
@@ -20,6 +20,7 @@ RUN set -ex; \
 # see https://docs.nextcloud.com/server/stable/admin_manual/installation/source_installation.html
 ENV PHP_MEMORY_LIMIT 512M
 ENV PHP_UPLOAD_LIMIT 512M
+ENV PHP_PM_MAX_CHILDREN 16
 RUN set -ex; \
     \
     savedAptMark="$(apt-mark showmanual)"; \
@@ -108,6 +109,7 @@ RUN { \
         echo 'memory_limit=${PHP_MEMORY_LIMIT}'; \
         echo 'upload_max_filesize=${PHP_UPLOAD_LIMIT}'; \
         echo 'post_max_size=${PHP_UPLOAD_LIMIT}'; \
+        echo 'pm.max_children = ${PHP_PM_MAX_CHILDREN}'; \
     } > "${PHP_INI_DIR}/conf.d/nextcloud.ini"; \
     \
     mkdir /var/www/data; \