diff --git a/tests/DockerImages/8.3/Dockerfile b/tests/DockerImages/8.3/Dockerfile
index 648f1f1d8..a783329c6 100644
--- a/tests/DockerImages/8.3/Dockerfile
+++ b/tests/DockerImages/8.3/Dockerfile
@@ -1,4 +1,4 @@
-FROM php:8.3.0RC1-alpine
+FROM php:8.3.0RC5-alpine
 
 RUN set -eux; \
     apk add --repository http://dl-cdn.alpinelinux.org/alpine/edge/community --no-cache --virtual .build-deps \