diff --git a/Dockerfile b/Dockerfile
index 1487c16..0563147 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,6 +10,7 @@ ENV PYTHONUNBUFFERED=1
 ENV SERVER_PORT=19998
 
 RUN apt-get update && \
+    apt-get upgrade -y && \
     if [ "$TARGETPLATFORM" = "linux/arm/v7" ] || [ "$TARGETPLATFORM" = "linux/386" ]; then \
         apt-get install -y --no-install-recommends zlib1g-dev libjpeg-dev gcc; \
     fi && \