diff --git a/sample/SampleApiWithExtensionProperties/Dockerfile b/sample/SampleApiWithExtensionProperties/Dockerfile
index f3802c2..e68c042 100644
--- a/sample/SampleApiWithExtensionProperties/Dockerfile
+++ b/sample/SampleApiWithExtensionProperties/Dockerfile
@@ -3,7 +3,7 @@ WORKDIR /app
 EXPOSE 80
 EXPOSE 443
 
-FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build
+FROM mcr.microsoft.com/dotnet/sdk:7.0 AS build
 WORKDIR /src
 COPY ["SampleApiWithExtensionProperties.csproj", "./"]
 RUN dotnet restore "SampleApiWithExtensionProperties.csproj"
diff --git a/sample/SampleApiWithFakerStub/Dockerfile b/sample/SampleApiWithFakerStub/Dockerfile
index 6f34d95..69cce5c 100644
--- a/sample/SampleApiWithFakerStub/Dockerfile
+++ b/sample/SampleApiWithFakerStub/Dockerfile
@@ -3,7 +3,7 @@ WORKDIR /app
 EXPOSE 80
 EXPOSE 443
 
-FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build
+FROM mcr.microsoft.com/dotnet/sdk:7.0 AS build
 WORKDIR /src
 COPY ["SampleApiWithFakerStub.csproj", "./"]
 RUN dotnet restore "SampleApiWithFakerStub.csproj"