U.S. House Speaker Paul Ryan (R-WI,1) endorsed presumptive GOP presidential nominee Donald Trump on Thursday. 

Last month, Ryan said he was "just not ready" to throw his support behind Trump, saying the businessman had some work to do before he could garner his support.

Now, writing in a column for the Janesville Gazette, Ryan said he is confident Trump will help House Republicans advance their "bold policy agenda." 

"Through these conversations, I feel confident he would help us turn the ideas in this agenda into laws to help improve people's lives. That's why I'll be voting for him this fall," Ryan wrote. 

"It's no secret that he and I have our differences. I won't pretend otherwise. And when I feel the need to, I'll continue to speak my mind. But the reality is, on the issues that make up our agenda, we have more common ground than disagreement."