diff --git a/Dockerfile b/Dockerfile
index 97ff258..ffddd38 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,10 +1,10 @@
-FROM debian:buster-slim as BuildContainer
+FROM debian:slim as BuildContainer
 RUN apt update && apt install wget -y
 RUN mkdir /usr/src/ooklaserver
 RUN wget https://install.speedtest.net/ooklaserver/ooklaserver.sh && chmod a+x ooklaserver.sh
 RUN ./ooklaserver.sh install -f -i /usr/src/ooklaserver
 
-FROM debian:buster-slim
+FROM debian:slim
 EXPOSE 8080
 EXPOSE 5060
 RUN useradd -M -r -s /sbin/nologin -u 4711 ookla