dependent on vs dependent upon

dependent on and dependent upon both are adjectives.

Word	Noun	Adjective	Verb	Adverb
dependent on	No	Yes	No	No
dependent upon	No	Yes	No	No

As adjectives, dependent on and dependent upon are synonyms defined as:

dependent on and dependent upon: being determined by conditions or circumstances that follow

Other synonyms of dependent on include contingent, contingent on, contingent upon, dependant on, dependant upon, depending on.

dependent on (adjective)	dependent upon (adjective)
being determined by conditions or circumstances that follow	being determined by conditions or circumstances that follow