diff --git a/7.1/apache_xhprof/Dockerfile b/7.1/apache_xhprof/Dockerfile
index 34263ed..f50264e 100644
--- a/7.1/apache_xhprof/Dockerfile
+++ b/7.1/apache_xhprof/Dockerfile
@@ -1,5 +1,5 @@
 # Pull base image.
-FROM php:7.1-apache
+FROM php:7.4.21-apache
 
 COPY config/php.ini /usr/local/etc/php/