diff --git a/Dockerfile b/Dockerfile
index e3bf24d..efcc5fb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,6 +11,7 @@ RUN apt-get update \
          vim \
          unzip \
          git \
+         telnet \
   && curl https://packages.microsoft.com/keys/microsoft.asc | tee /etc/apt/trusted.gpg.d/microsoft.asc \
   && curl https://packages.microsoft.com/config/debian/12/prod.list | tee /etc/apt/sources.list.d/mssql-release.list \
   && echo "deb [arch=amd64,arm64,armhf] https://packages.microsoft.com/debian/12/prod bookworm main" > /etc/apt/sources.list.d/mssql-release.list \