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# Adding default values to primary keys

1. Click on the primary key in your table.
2. Click "Edit column"

   <figure><img src="/files/xKdevyRLbcZPasXgP16b" alt=""><figcaption></figcaption></figure>
3. Change the column type to uuid
4. Set the Default Value equal to <mark style="color:red;">`gen_random_uuid()`</mark>

   <figure><img src="/files/NZaI6l3HPc9xKqOmUVRv" alt=""><figcaption></figcaption></figure>
5. Make sure "Is Unique" is toggled on

   <figure><img src="/files/YyQeF9vUmHx0UltiSvbW" alt=""><figcaption></figcaption></figure>