How to remove empty lines with regex in Notepad++?

Is there a way I can delete all empty lines with regex with Notepad++?

I know I can achieve it from UI by click on:

• Edit
• Line Operations
• Remove Empty Lines

But is there a way to do it with regex?

For example I have:

line 1

line 3

line 5


line 8

After empty files are removed:

line 1
line 3
line 5
line 8