diff --git a/dockerfiles/bright.dockerfile b/dockerfiles/bright.dockerfile
index 3e56b0a..9ab2b2b 100644
--- a/dockerfiles/bright.dockerfile
+++ b/dockerfiles/bright.dockerfile
@@ -24,7 +24,7 @@
 
 FROM elixir:1.17.2-alpine AS dev
 
-RUN apk add --no-cache git gcc make inotify-tools \
+RUN apk add --no-cache git gcc make inotify-tools erlang-dev \
     && mkdir /home/user \
     && chown 1000.1000 /home/user