issue installing keras on rstudio cloud

I am having issues with installing keras and tensorflow on rstudio cloud. It give out an error.

> install_tensorflow()
Collecting package metadata (current_repodata.json): ...working... done
Solving environment: ...working... done

# All requested packages already installed.

Collecting tensorflow==2.2.0
  Downloading tensorflow-2.2.0-cp36-cp36m-manylinux2010_x86_64.whl (516.2 MB)
Killed
Error: Error installing package(s): 'tensorflow==2.2.0'