diff --git a/Dockerfile b/Dockerfile
index 917e5d4..e825aba 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,7 +16,7 @@ RUN set -ex; \
     cd /flox/backend; \
     composer install;
 
-FROM php:7.3.21-fpm-buster@sha256:0089dd22a25ec37432f89996d30baec52adf5d0ac7be32d7e1455bd2bba99de6
+FROM php:7.4.9-fpm-buster@sha256:4bb8a6db3122ee302e990b0f2a6d709fb791dde5843cfbcb3fefdf26e9cdf8f2
 COPY --from=composer /flox /usr/share/flox
 RUN set -ex; \
     \