Atrasentan and hyperklamia relation

After being on atrasentan (vanrafia) for four months my poassium level has gone up to 5.8 mmol/L. I have also been taking ramipril for the past two years but it never affected my potassium level therefore I believe the culprit must be atrasentan. Has anyone else experienced an increase of their potassium level after taking Atrasentan?