diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f6ef10804052d7f98f1774986c7bcd640dfd43ea..f3e287842c26b3ee54831a2420374c28748b153d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -2,7 +2,7 @@ image: docker:24
 
 variables:
   DOCKER_TLS_CERTDIR: "/certs"
-  BUILD_VERSION: p3
+  BUILD_VERSION: p4
 
 services:
   - docker:24-dind
diff --git a/Dockerfile b/Dockerfile
index 49c84f50131ee54ae8cae3bbd0666b6b2344c04a..20259a5312cc8222c6a6be6166b0de364d01cce6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -21,4 +21,4 @@ RUN set -ex; \
             weird-birds/thunderbird_labels \
     ;
 
-RUN sed '/exec "$@"/i composer require -n --no-dev' /docker-entrypoint.sh
+RUN sed -i '/exec "$@"/i composer require -n --no-dev' /docker-entrypoint.sh