diff --git a/Dockerfile b/Dockerfile
index 97f25d0..87d24bc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,7 +6,7 @@ WORKDIR cert-generator/
 
 RUN dotnet build cert-generator.csproj -o /app_output
 
-FROM mcr.microsoft.com/dotnet/runtime:7.0-alpine AS final
+FROM mcr.microsoft.com/dotnet/runtime:9.0-alpine AS final
 MAINTAINER Bengt Fredh <brf@digdir.no>
 
 COPY --from=build /app_output /usr/local/bin/