diff --git a/bin/generator.sh b/bin/generator.sh
index 3e72c858..28638815 100755
--- a/bin/generator.sh
+++ b/bin/generator.sh
@@ -25,6 +25,6 @@ rm -rf ./output
 docker run --rm                     \
     -v "$(pwd)":/var/www            \
     -e SWOOLE_LIB_VERSION=${2}      \
-    -ti phpswoole/swoole:${1}-php7.2-alpine \
+    -ti phpswoole/swoole:${1}-php7.4-alpine \
     sh -c "composer selfupdate --2 && composer install -n && ./bin/generator.php"
 git add ./output