diff --git a/selfhosted.Dockerfile b/selfhosted.Dockerfile
index 06a37f2..8d6ecb0 100644
--- a/selfhosted.Dockerfile
+++ b/selfhosted.Dockerfile
@@ -39,6 +39,7 @@ RUN mix local.hex --force && \
 
 # set build ENV
 ENV MIX_ENV="prod"
+ENV ERL_FLAGS="+JPperf true"
 
 # install mix dependencies
 COPY mix.exs mix.lock ./