Step 1: Login to WordPress as Administrator
Hopefully, you are already well-versed in logging into your WordPress site as an administrator!
Step 2: Access Updates
If there is an update for a plugin or a theme, then you’ll likely have a number in the top bar and next to Updates as shown below (the number 5). Click on Updates!
Step 3: Select All the Plugins
Check the box for Select All:
wordpress update
Step 4: Update the Plugins
Click on Update Plugins:
wordpress update
And at the end of the update process you should receive something similar to, All updates have been completed.
wordpress update
Step 5: Verify the Update
If you want to be absolutely sure your version is updated, you can click on Plugins and then verify that WP Super Cache is at least version 1.4.4
wordpress update