diff --git a/.github/workflows/clojure.yml b/.github/workflows/clojure.yml
index ff122e0..15d1d17 100644
--- a/.github/workflows/clojure.yml
+++ b/.github/workflows/clojure.yml
@@ -18,13 +18,16 @@ jobs:
         os: [ubuntu-latest]
 
     container:
-      image: clojure:openjdk-${{ matrix.jdk_version }}-tools-deps
+      image: clojure:openjdk-${{ matrix.jdk_version }}-lein
 
     steps:
-      - uses: actions/checkout@v4
-      - name: Version
-        run: clj --version
-      - name: Prepare Deps
-        run: clj -P
-      - name: Test, Write POM, Build
-        run: clj -T:build jar
+      - uses: actions/checkout@v2
+      - name: Info
+        run: lein version
+      - name: Package
+        run: |
+          lein deps
+          lein compile
+          lein uberjar
+      - name: Tests
+        run: lein test
diff --git a/.gitignore b/.gitignore
index 23e0252..da3d4bb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,6 +5,7 @@
 .clj-kondo/
 /.cpcache/
 *.jar
+/.lein-*
 .lsp/
 /.nrepl-port
 pom.xml
diff --git a/build.clj b/build.clj
deleted file mode 100644
index 02fe6b4..0000000
--- a/build.clj
+++ /dev/null
@@ -1,105 +0,0 @@
-(ns build
-  "Clean:
-   clj -T:build clean
-
-   Test:
-   clj -T:build test
-
-   Test, Write POM, Build JAR:
-   clj -T:build jar
-
-   Deploy to Clojars:
-   CLOJARS_USERNAME=username
-   CLOJARS_PASSWORD=clojars-token
-   clj -T:build deploy"
-  (:refer-clojure :exclude [test])
-  (:require [clojure.tools.build.api :as b]
-            [deps-deploy.deps-deploy :as dd]))
-
-(def project
-  "Project Metadata"
-  {:description "A library of functions to enhance clojure.core."
-   :lib 'com.github.wdhowe/clj-contrib
-   :version "1.0.0"
-   :license "Eclipse Public License"
-   :license-url "http://www.eclipse.org/legal/epl-v20.html"
-   :author "Bill Howe"
-   :url "https://github.com/wdhowe/clj-contrib"
-   :git-repo "wdhowe/clj-contrib"
-   :class-dir "target/classes"})
-
-(defn- pom-template
-  [version]
-  (let [git-repo (:git-repo project)
-        url (:url project)]
-    [[:description (:description project)]
-     [:url url]
-     [:licenses
-      [:license
-       [:name (:license project)]
-       [:url (:license-url project)]]]
-     [:developers
-      [:developer
-       [:name (:author project)]]]
-     [:scm
-      [:url url]
-      [:connection (format "scm:git:%s.git" url)]
-      [:developerConnection (format "scm:git:ssh:git@github.com:%s.git" git-repo)]
-      [:tag (str "v" version)]]]))
-
-(defn- jar-opts
-  [opts]
-  (let [version (:version project)
-        lib     (:lib project)]
-    (assoc opts
-           :basis     (b/create-basis {})
-           :class-dir (:class-dir project)
-           :jar-file  (format "target/%s-%s.jar" lib version)
-           :lib       lib
-           :pom-data  (pom-template version)
-           :src-dirs  ["src"]
-           :target    "target"
-           :version   version)))
-
-(defn clean
-  "Remove build directory."
-  [_]
-  (b/delete {:path "target"}))
-
-(defn test
-  "Run all the tests."
-  [opts]
-  (let [basis (b/create-basis {:aliases [:test]})
-        cmds  (b/java-command
-               {:basis     basis
-                :main      'clojure.main
-                :main-args ["-m" "cognitect.test-runner"]})
-        {:keys [exit]} (b/process cmds)]
-    (when-not (zero? exit) (throw (ex-info "Tests failed" {}))))
-  opts)
-
-(defn jar
-  "Run the CI pipeline of: tests, write pom, and build the JAR."
-  [opts]
-  (test opts)
-  (clean nil)
-  (let [opts (jar-opts opts)]
-    (println "\nWriting pom.xml...")
-    (b/write-pom opts)
-    (println "\nCopying source...")
-    (b/copy-dir {:src-dirs ["resources" "src"]
-                 :target-dir (:class-dir project)})
-    (println "\nBuilding JAR" (:jar-file opts) "...")
-    (b/jar opts)
-    (println (format "Created %s" (:jar-file opts))))
-  opts)
-
-(defn deploy
-  "Deploy the JAR to Clojars."
-  [opts]
-  (let [{:keys [jar-file] :as opts}
-        (jar-opts opts)]
-    (dd/deploy {:installer :remote
-                :artifact (b/resolve-path jar-file)
-                :pom-file (b/pom-path (select-keys opts [:lib :class-dir]))}))
-  opts)
diff --git a/deps.edn b/deps.edn
index 8b7bb58..2b5be0c 100644
--- a/deps.edn
+++ b/deps.edn
@@ -1,23 +1,6 @@
 {;; Dependencies
- :deps {org.clojure/clojure {:mvn/version "1.11.1"}
+ :deps {org.clojure/clojure {:mvn/version "1.11.2"}
         org.clojure/core.async {:mvn/version "1.6.681"}}
  
  ;; File system paths
- :paths ["src" "resources"]
-
- ;; clj cli aliases
- :aliases
- {;; See build.clj for details of the :build alias.
-  :build {:deps {io.github.clojure/tools.build {:mvn/version "0.9.6"}
-                 slipset/deps-deploy {:mvn/version "0.2.2"}}
-          :ns-default build}
-  
-  ;; Run tests: clj -X:test
-  :test {:extra-paths ["test"]
-         :extra-deps {org.clojure/test.check {:mvn/version "1.1.1"}
-                      io.github.cognitect-labs/test-runner {:git/tag "v0.5.1" :git/sha "dfb30dd"}}
-         :exec-fn cognitect.test-runner.api/test}
-  
-  ;; Upgrade outdated deps: clj -M:outdated :upgrade true
-  :outdated {:deps {com.github.liquidz/antq {:mvn/version "RELEASE"}}
-             :main-opts ["-m" "antq.core"]}}}
\ No newline at end of file
+ :paths ["src"]}
diff --git a/project.clj b/project.clj
new file mode 100644
index 0000000..3cf05eb
--- /dev/null
+++ b/project.clj
@@ -0,0 +1,17 @@
+(defproject clj-contrib "0.1.0"
+
+  ;;; Project Metadata
+  :description "A library of functions to enhance clojure.core."
+  :url "https://github.com/wdhowe/clj-contrib"
+  :license {:name "EPL-2.0 OR GPL-2.0-or-later WITH Classpath-exception-2.0"
+            :url "https://www.eclipse.org/legal/epl-2.0/"}
+
+  ;;; Dependencies, Plugins
+  :dependencies [[org.clojure/clojure "1.11.2"]
+                 [org.clojure/core.async "1.6.681"]]
+
+  ;;; Profiles
+  :profiles {:uberjar {:aot :all}}
+
+  ;;; Running Project Code
+  :repl-options {:init-ns clj-contrib.core})