diff --git a/deploy/Dockerfile b/deploy/Dockerfile
index ed9eb85..e60ce43 100644
--- a/deploy/Dockerfile
+++ b/deploy/Dockerfile
@@ -11,6 +11,7 @@ RUN install-php-extensions \
     opcache \
     redis \
     mongodb \
+    pcntl \
     zip
 
 COPY . /app