diff --git a/src/EventGridEmulator/Dockerfile b/src/EventGridEmulator/Dockerfile
index 27fb9cd..0ce375d 100644
--- a/src/EventGridEmulator/Dockerfile
+++ b/src/EventGridEmulator/Dockerfile
@@ -5,7 +5,7 @@ ENV DOTNET_CLI_TELEMETRY_OPTOUT=true
 ENV DOTNET_ENVIRONMENT=Production
 ENV ASPNETCORE_URLS=http://+:6500
 
-FROM mcr.microsoft.com/dotnet/sdk:8.0-alpine AS publish
+FROM mcr.microsoft.com/dotnet/sdk:9.0-alpine AS publish
 WORKDIR /src
 COPY . .
 WORKDIR "/src/EventGridEmulator"