Thanks! Gave that a try… no dice. ClojureScript being included in an uberjar dep would definitely explain it.

Exclusion probably does not work because lein-codox does not depend on anything. It only adds the codox dependency when you use the plugin, which in turn adds the ClojureScript dependency.

I suppose you could add [[codox "0.10.2" :exclusions [org.clojure/clojurescript]] as a dependency, so that lein-codox won't override it.