Cannot build project due to Derelict package

[Andrey via Digitalmars-d-learn]

Hello,
I try to build my project using command "dub build" but I can\t 
because there is an error:
Fetching derelict-util 3.0.0-beta.2 (getting selected 
version)...
SSL connect error on handle 1F19AC0
And this happens every time... As I understand dub can't find 
package.

In dub.json I have this:
"dependencies": {
    "derelict-glfw3": "~master"
}

I manually downloaded derelict-glfw3 and derelict-util from 
GitHub (master branch). What should I do to dub knew about these 
local packages?