diff --git a/.gitignore b/.gitignore
index ede0d9a..49111d7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+/.cpcache
 /.shadow-cljs
 /lib.js
 /node_modules
diff --git a/README.md b/README.md
index b8d9255..3f10db6 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,9 @@ was created.
 It has not yet been published to npm; I am holding off on doing that
 until the DSL stabilizes a bit in the course of converting the LaTeX
 documents I developed this for. I expect it will be ready in a week or
-two. Until then, clone the repository and build it by running:
+two. Until then, clone the repository and build it by making sure you
+have [Node.js](https://nodejs.org/en/) and the [Clojure CLI
+tools](https://clojure.org/guides/getting_started) installed, and run:
 
     npm install
     npm run build
@@ -41,6 +43,10 @@ two. Until then, clone the repository and build it by running:
 This will create the file `lib.js`. At that point, you can try
 building the test SVG file as shown above.
 
+To check for outdated dependencies, you can run:
+
+    clojure -A:outdated
+
 ## License
 
 <a href="http://deepsymmetry.org"><img align="right" alt="Deep Symmetry"
diff --git a/deps.edn b/deps.edn
new file mode 100644
index 0000000..def364a
--- /dev/null
+++ b/deps.edn
@@ -0,0 +1,8 @@
+;; Clojure dependency information and source location.
+{:deps     {thheller/shadow-cljs     {:mvn/version "2.8.90"}
+            org.clojure/tools.reader {:mvn/version "1.3.2"}
+            analemma                 {:mvn/version "1.1.0"}
+            borkdude/sci             {:mvn/version "0.0.13-alpha.12"}}
+ :paths    ["src"]
+ :aliases {:outdated {:extra-deps {olical/depot {:mvn/version "1.8.4"}}
+                      :main-opts  ["-m" "depot.outdated.main"]}}}
diff --git a/shadow-cljs.edn b/shadow-cljs.edn
index ff4198f..c64d108 100644
--- a/shadow-cljs.edn
+++ b/shadow-cljs.edn
@@ -1,12 +1,5 @@
 ;; shadow-cljs configuration
-{:source-paths
- ["src"]
-
- :dependencies
- [[org.clojure/tools.reader "1.3.2"]
-  [analemma "1.1.0"]
-  [borkdude/sci "0.0.13-alpha.12"]]
-
- :builds {:lib {:target      :node-library
-                :output-to   "lib.js"
-                :exports-var org.deepsymmetry.bytefield.core/generate}}}
+{:deps    true
+ :builds  {:lib {:target      :node-library
+                 :output-to   "lib.js"
+                 :exports-var org.deepsymmetry.bytefield.core/generate}}}