diff --git a/Dockerfile b/Dockerfile
index 8ed1eec..4473d60 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,7 +10,8 @@ ENV SEARCHDIR /data
 ENV CHARTDIR /chart
 ENV TEXTDIR /text
 
-RUN apt update && apt install -y python3-matplotlib && apt clean && pip3 install --no-cache-dir sentry_sdk
+COPY requirements.txt .
+RUN pip3 install --no-cache-dir -r requirements.txt && rm requirements.txt
 
 COPY make_graphs.py .