diff --git a/8/templates/docker-php-ext-apcu.ini.tmpl b/8/templates/docker-php-ext-apcu.ini.tmpl
index 5479d0e..1eb4f89 100644
--- a/8/templates/docker-php-ext-apcu.ini.tmpl
+++ b/8/templates/docker-php-ext-apcu.ini.tmpl
@@ -2,7 +2,7 @@
 extension=apcu.so
 apc.enabled	= {{ getenv "PHP_APCU_ENABLED" "1" }}
 apc.shm_segments = {{ getenv "PHP_APCU_SHM_SEGMENTS" "1" }}
-apc.shm_size = {{ getenv "PHP_APCU_SHM_SIZE" "32M" }}
+apc.shm_size = {{ getenv "PHP_APCU_SHM_SIZE" "128M" }}
 apc.entries_hint = {{ getenv "PHP_APCU_ENTRIES_HINT" "4096" }}
 apc.ttl = {{ getenv "PHP_APCU_TTL" "0" }}
 apc.gc_ttl = {{ getenv "PHP_APCU_GC_TTL" "3600" }}
diff --git a/README.md b/README.md
index 2ed4a48..4e9f9a2 100644
--- a/README.md
+++ b/README.md
@@ -84,7 +84,7 @@ The default configuration not recommended for use for production environment:
 | [`PHP_APCU_PRELOAD_PATH`]               | `NULL`                 | `NULL`                 | `NULL`                                         |
 | [`PHP_APCU_SERIALIZER`]                 |                        |                        |                                                |
 | [`PHP_APCU_SHM_SEGMENTS`]               | `1`                    | `1`                    | `1`                                            |
-| [`PHP_APCU_SHM_SIZE`]                   | `32M`                  | `32M`                  | `32M`                                          |
+| [`PHP_APCU_SHM_SIZE`]                   | `128M`                 | `128M`                 | `128M`                                         |
 | [`PHP_APCU_SLAM_DEFENSE`]               | `1`                    | `1`                    | `1`                                            |
 | [`PHP_APCU_TTL`]                        | `0`                    | `0`                    | `0`                                            |
 | [`PHP_APCU_USE_REQUEST_TIME`]           | `1`                    | `1`                    | `1`                                            |