Exporting from Lightroom to Photoshop

Last night I updated my CC version of Lightroom and Photoshop but now it won't let me export a photo from Lightroom to Photoshop when I choose to "Edit in.." It's still pulling up "Adobe Photoshop CC 2015" but I'm now using the 2018 version and I can't figure out how to fix this.

Please help!