Make "content" of Cms::Block larger than "text"

We had a problem on one site when there was really large "Content" part. This content was cutted off and we didn't see it on "Edit Page" but the page was saved correctly and had this content. It was cutted in Cms::Block. Probably it would be a good solution to increase limit of "content" in "cms_blocks" (MySQL mediumtext instead of text).