diff --git a/frankenphp-83.dockerfile b/frankenphp-83.dockerfile
index 165473b..19f90b4 100644
--- a/frankenphp-83.dockerfile
+++ b/frankenphp-83.dockerfile
@@ -1,6 +1,6 @@
 FROM dunglas/frankenphp:latest-php8.3
 
-RUN install-php-extensions @composer opcache intl pdo_mysql pdo_pgsql
+RUN install-php-extensions @composer opcache intl pdo_mysql pdo_pgsql pcntl
 
 RUN cp $PHP_INI_DIR/php.ini-production $PHP_INI_DIR/php.ini; \
     sed -i 's/variables_order = "GPCS"/variables_order = "EGPCS"/' $PHP_INI_DIR/php.ini; \