diff --git a/Dockerfile b/Dockerfile
index 2d39a51..c53eb49 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 ARG CERT_PASSWORD
-ARG DOTNET_SDK_VERSION=9.0.203
-ARG DOTNET_RUNTIME_VERSION=9.0.4
+ARG DOTNET_SDK_VERSION=9.0.300
+ARG DOTNET_RUNTIME_VERSION=9.0.5
 ARG ALPINE_VERSION=3.21
 ARG CONFIG_DIRECTORY_ARG=/config
 FROM mcr.microsoft.com/dotnet/sdk:${DOTNET_SDK_VERSION}-alpine${ALPINE_VERSION}-amd64 AS build-env
diff --git a/README.md b/README.md
index c015ced..359e845 100644
--- a/README.md
+++ b/README.md
@@ -66,9 +66,9 @@ docker build --build-arg CERT_PASSWORD=supersecretpassword . -t net-base
 | Argument                                            | Description                                                             | Default                                                                                      |
 |-----------------------------------------------------|-------------------------------------------------------------------------|----------------------------------------------------------------------------------------------|
 | CERT_PASSWORD                                       | The password for the generated certificate                              | N/A **(required)**                                                                           |
-| DOTNET_SDK_VERSION                                  | The [SDK](https://mcr.microsoft.com/en-us/artifact/mar/dotnet/sdk/tags) version used to generate the development certificate | 9.0.203                                 |
-| DOTNET_RUNTIME_VERSION                              | The [runtime](https://mcr.microsoft.com/en-us/artifact/mar/dotnet/aspnet/tags) version used as a base | 9.0.4                                                          |
-| ALPINE_VERSION                                      | The version of [alpine linux](https://www.alpinelinux.org/) used as a base <br/> Currently you can choose between `3.20` or `3.21`  | 3.21                             |
+| DOTNET_SDK_VERSION                                  | The [SDK](https://mcr.microsoft.com/en-us/artifact/mar/dotnet/sdk/tags) version used to generate the development certificate | 9.0.300                                 |
+| DOTNET_RUNTIME_VERSION                              | The [runtime](https://mcr.microsoft.com/en-us/artifact/mar/dotnet/aspnet/tags) version used as a base | 9.0.5                                                          |
+| ALPINE_VERSION                                      | The version of [alpine linux](https://www.alpinelinux.org/) used as a base| 3.21                                                                                       |
 
 ## Security implications