diff --git a/Dockerfile b/Dockerfile
index 642926a..011ca99 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -54,6 +54,7 @@ ENV PYTHONUNBUFFERED=1 \
 # 런타임 필수 라이브러리만 (컴파일러 툴체인 제외)
 RUN apt-get update && apt-get install -y --no-install-recommends \
         ffmpeg libsndfile1 libgomp1 ca-certificates rubberband-cli \
+        build-essential \
     && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /app