diff --git a/docker/multistage/Dockerfile b/docker/multistage/Dockerfile
index 0d8044e..357e9cc 100644
--- a/docker/multistage/Dockerfile
+++ b/docker/multistage/Dockerfile
@@ -26,7 +26,7 @@ CMD ["/ujetl_entrypoint"]
 FROM runner as tester
 COPY TEST_config_live.xml /var/ujetl/
 COPY wait_for_postgres /
-RUN apk add postgresql-client
+RUN apt install postgresql-client
 
 
 FROM runner as deploy