diff --git a/install-dotnet-sdk.sh b/install-dotnet-sdk.sh
old mode 100644
new mode 100755
index b52d3ab1..68aef8ed
--- a/install-dotnet-sdk.sh
+++ b/install-dotnet-sdk.sh
@@ -1 +1,4 @@
-sudo apt install dotnet-sdk-7.0
\ No newline at end of file
+wget https://packages.microsoft.com/config/ubuntu/18.04/packages-microsoft-prod.deb -O packages-microsoft-prod.deb
+sudo dpkg -i packages-microsoft-prod.deb
+rm packages-microsoft-prod.deb
+sudo apt-get update && sudo apt-get install -y dotnet-sdk-7.0