Why is my board automatically updating from l4t 36.4.0 to l4t 36.4.3?

I ran the command sudo apt upgrade
and it upgraded l4t. How can I avoid this upgrade?
I am using a docker for 36.4 and when the upgrade happens to 36.4.3 it breaks my application and the board starts using 100% cpu.
How can I avoid the upgrading to l4t 36.4.3 when running sudo apt upgrade?

Running sudo apt-get full-upgrade Fixed the 100% CPU usage.

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