Log in to your WordPress Dashboard. You will see your main menu on the left. Click on 'Plugins > Installed Plugins' as shown in Figure 1.

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Figure 1

This will take you to the Plugin page of your website. Here, you will see all the plugins that have been currently installed in your application. To update a plugin click on the 'Update Now' link below appearing below a plugin as shown in Figure 2.

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Figure 2

WordPress will automatically download the most recent version of the plugin and install it as shown in Figure 3.

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Figure 3

You can repeat this process if you need to update more plugins.