diff --git a/Chapter-3-microservice-extraction/Fitnet.Contracts/Src/Dockerfile b/Chapter-3-microservice-extraction/Fitnet.Contracts/Src/Dockerfile
index aa306056..f15cb2cc 100644
--- a/Chapter-3-microservice-extraction/Fitnet.Contracts/Src/Dockerfile
+++ b/Chapter-3-microservice-extraction/Fitnet.Contracts/Src/Dockerfile
@@ -1,9 +1,9 @@
-FROM mcr.microsoft.com/dotnet/aspnet:7.0 AS base
+FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS base
 WORKDIR /app
 EXPOSE 80
 EXPOSE 443
 
-FROM mcr.microsoft.com/dotnet/sdk:7.0 AS build
+FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
 WORKDIR /src
 COPY Directory.Build.props ./
 COPY ["Fitnet.Contracts/Fitnet.Contracts.csproj", "Fitnet.Contracts/"]
diff --git a/Chapter-3-microservice-extraction/Fitnet/Src/Dockerfile b/Chapter-3-microservice-extraction/Fitnet/Src/Dockerfile
index f55b6695..6134e497 100644
--- a/Chapter-3-microservice-extraction/Fitnet/Src/Dockerfile
+++ b/Chapter-3-microservice-extraction/Fitnet/Src/Dockerfile
@@ -1,9 +1,9 @@
-FROM mcr.microsoft.com/dotnet/aspnet:7.0 AS base
+FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS base
 WORKDIR /app
 EXPOSE 80
 EXPOSE 443
 
-FROM mcr.microsoft.com/dotnet/sdk:7.0 AS build
+FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
 WORKDIR /src
 COPY Directory.Build.props ./
 COPY ["Fitnet/Fitnet.csproj", "Fitnet/"]