diff --git a/Dockerfile-8.1 b/Dockerfile-8.1
index b639685..ade70f4 100644
--- a/Dockerfile-8.1
+++ b/Dockerfile-8.1
@@ -24,7 +24,7 @@ ENV CONF_PHPFPM=/etc/php/8.1/fpm/php-fpm.conf \
     PHP_OPCACHE_INTERNED_STRINGS_BUFFER=16 \
     PHP_OPCACHE_MAX_WASTED_PERCENTAGE=5 \
     PHP_OPCACHE_ENABLE_CLI=1 \
-    PHP_ENGINE_VERSION=20200930 \
+    PHP_ENGINE_VERSION=20210902 \
     CFG_APP_DEBUG=1
 
 COPY ./scripts/ /scripts/