diff --git a/AOC2021/Dockerfile b/AOC2021/Dockerfile
index 9c6486b..d696869 100644
--- a/AOC2021/Dockerfile
+++ b/AOC2021/Dockerfile
@@ -1,4 +1,4 @@
-FROM mcr.microsoft.com/dotnet/runtime:5.0 AS base
+FROM mcr.microsoft.com/dotnet/aspnet:5.0 AS base
 WORKDIR /app
 EXPOSE 80
 EXPOSE 443