diff --git a/mssql.Dockerfile b/mssql.Dockerfile
index c8d2f87..869fe2c 100644
--- a/mssql.Dockerfile
+++ b/mssql.Dockerfile
@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:1
-FROM mcr.microsoft.com/mssql/server:2022-latest
+FROM mcr.microsoft.com/mssql/server:2022-latest@sha256:ffef32dda16cc5abd70db1d0654c01cbe9f7093d66e0c83ade20738156cb7d0e
 USER root
 
 RUN export DEBIAN_FRONTEND=noninteractive && \
@@ -7,7 +7,7 @@ apt-get update --fix-missing && \
 apt-get install -y gnupg2 && \
 apt-get install -yq curl apt-transport-https && \
 curl https://packages.microsoft.com/keys/microsoft.asc | tac | tac | apt-key add - && \
-curl https://packages.microsoft.com/config/ubuntu/20.04/mssql-server-2019.list | tac | tac | tee /etc/apt/sources.list.d/mssql-server.list && \
+curl https://packages.microsoft.com/config/ubuntu/22.04/mssql-server-2022.list | tac | tac | tee /etc/apt/sources.list.d/mssql-server.list && \
 apt-get update
 
 RUN apt-get install -y mssql-server-fts