diff --git a/container/Dockerfile b/container/Dockerfile
index e119ccd..9a6c105 100644
--- a/container/Dockerfile
+++ b/container/Dockerfile
@@ -17,7 +17,7 @@ RUN git clone https://github.com/nsslums/cit-bot.git
 FROM python:slim
 
 # library install
-RUN pip install discord.py load_dotenv json-tricks
+RUN apt update && apt install gcc && pip install discord.py load_dotenv json-tricks
 
 # disable cache
 ARG NOCACHE=1