diff --git a/runtimes/8.4/DockerfileAlpine b/runtimes/8.4/DockerfileAlpine
index 910869f..dd38745 100644
--- a/runtimes/8.4/DockerfileAlpine
+++ b/runtimes/8.4/DockerfileAlpine
@@ -62,8 +62,8 @@ RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
 ADD https://github.com/mlocati/docker-php-extension-installer/releases/latest/download/install-php-extensions /usr/local/bin/
 
 RUN chmod +x /usr/local/bin/install-php-extensions && \
-#    pcov swoole xdebug
-    install-php-extensions @composer pgsql imagick mongodb gd imap zip bcmath pcntl soap intl exif ldap msgpack igbinary redis opcache memcached pdo_pgsql pdo_mysql xhprof
+#    pcov
+    install-php-extensions @composer swoole-^6 xdebug pgsql imagick mongodb gd imap zip bcmath pcntl soap intl exif ldap msgpack igbinary redis opcache memcached pdo_pgsql pdo_mysql xhprof
 COPY --from=node /usr/lib /usr/lib
 COPY --from=node /usr/local/lib /usr/local/lib
 COPY --from=node /usr/local/include /usr/local/include