diff --git a/Dockerfile b/Dockerfile
index 22ba731..f99632a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,7 +11,7 @@ RUN cp /etc/apt/sources.list /etc/apt/sources.list.bak && \
     echo  "deb http://mirrors.tuna.tsinghua.edu.cn/debian/ buster-backports main contrib non-free" >>/etc/apt/sources.list && \
     echo  "deb http://mirrors.tuna.tsinghua.edu.cn/debian-security buster/updates main contrib non-free" >>/etc/apt/sources.list
 
-RUN apt-get update
+RUN apt-get update && apt-get upgrade
 RUN apt-get install -y --no-install-recommends build-essential gcc wget
 
 # TA-Lib