diff --git a/Dockerfile b/Dockerfile
index 3deeac2..8ebaeaa 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,10 +1,11 @@
-FROM ubuntu:latest
+FROM ubuntu:jammy-20220531
 ENV DEBIAN_FRONTEND noninteractive
 RUN     apt-get update && apt-get install --no-install-recommends --no-install-suggests -y \
         lib32gcc-s1 \
         curl \
         ca-certificates \
         locales && \
+        apt-get -y upgrade && \
         locale-gen "en_US.UTF-8" && \
         export LC_ALL="en_US.UTF-8" && \
         useradd -m steam && \