diff --git a/Dockerfile b/Dockerfile
index a23c6ff..a7eae33 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM jupyter/base-notebook:latest
+FROM jupyter/base-notebook:ubuntu-20.04
 
 # Install .NET CLI dependencies
 
@@ -61,7 +61,7 @@ USER ${USER}
 RUN pip install nteract_on_jupyter
 
 # Install lastest build from master branch of Microsoft.DotNet.Interactive from myget
-RUN dotnet tool install -g Microsoft.dotnet-interactive --version 1.0.126104 --add-source "https://dotnet.myget.org/F/dotnet-try/api/v3/index.json"
+RUN dotnet tool install -g Microsoft.dotnet-interactive --version 1.0.126104 --add-source "https://dotnet.myget.org/F/dotnet-try/api/v3/index.jsonhttps://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json"
 
 ENV PATH="${PATH}:${HOME}/.dotnet/tools"
 RUN echo "$PATH"