diff --git a/utilities/testrunners/php85/Dockerfile b/utilities/testrunners/php85/Dockerfile
index 204c3038..46bde811 100644
--- a/utilities/testrunners/php85/Dockerfile
+++ b/utilities/testrunners/php85/Dockerfile
@@ -1,4 +1,4 @@
-FROM php:8.5-cli-bullseye
+FROM php:8.5-rc-cli-bullseye
 
 ## Basic utilities
 RUN apt-get update -yqq && apt-get install -y curl apt-utils git zip unzip