The content of ~/.lein/profiles.clj is as follows

{:user {:plugins [[luminus/lein-template "2.9.9.2"]]}}

(defproject sql-compose "0.1.0"
  :description "A simple sql query composer for clojure."
  :url ""
  :license {:name "EPL-2.0 OR GPL-2.0-or-later WITH Classpath-exception-2.0"
            :url ""}
  :dependencies [[org.clojure/clojure "1.10.1"]]
  :repl-options {:init-ns sql-compose.core})

Try adding this to your project.clj

:deploy-repositories [["releases"  {:sign-releases false :url ""}]
                        ["snapshots" {:sign-releases false :url ""}]]

And then lein deploy clojars. I'm assuming you already did lein jar to create the jar in the first place. I also assume you have set up a clojars account and deploy token; and have placed each of them in the appropriate environment variable.