diff --git a/developer/setup.md b/developer/setup.md
index f4cb161..eec676a 100644
--- a/developer/setup.md
+++ b/developer/setup.md
@@ -4,8 +4,8 @@ Ready to hack on your site? Here's a quick overview.
 
 ## Prerequisites
 
-* [Go 1.13+](https://golang.org/dl/)
-* [Node.js](https://nodejs.org/en/download/)
+* [Go 1.19+](https://golang.org/dl/)
+* [Node.js 15+](https://nodejs.org/en/download/)
 
 ## Quick start
 
@@ -30,14 +30,6 @@ git clone https://github.com/writefreely/writefreely.git
 cd writefreely
 ```
 
-Next, install the bindata generator and create `bindata.go` (needed for a successful build).
-
-```bash
-GOPATH=${GOPATH:-$HOME/go/bin}
-go install github.com/jteeuwen/go-bindata/go-bindata
-${GOPATH}/go-bindata -pkg writefreely -ignore=\\.gitignore schema.sql sqlite.sql
-```
-
 Finally, build the `writefreely` binary with SQLite support. (Remove `-tags='sqlite'` if you don't need SQLite support.)
 
 ```bash
@@ -48,21 +40,29 @@ You can now run WriteFreely! But you'll need one more step to generate some asse
 
 ### Building site assets
 
-You'll need Node.js and LESS installed to generate WriteFreely static assets. Install LESS:
+You'll need Node.js and LESS installed to generate WriteFreely static assets. Install LESS using our utility script:
 
 ```bash
-npm install less less-plugin-clean-css
+./less/install-less.sh
 ```
 
 Next, compile all stylesheets from the `less` directory, creating them in the `static/css/` directory:
 
 ```bash
 cd less
-LESSC=../node_modules/less/bin/lessc
 CSSDIR=../static/css
-$LESSC app.less --clean-css="--s1 --advanced" ${CSSDIR}/write.css
-$LESSC fonts.less --clean-css="--s1 --advanced" ${CSSDIR}/fonts.css
-$LESSC icons.less --clean-css="--s1 --advanced" ${CSSDIR}/icons.css
+lessc app.less --clean-css="--s1 --advanced" ${CSSDIR}/write.css
+lessc fonts.less --clean-css="--s1 --advanced" ${CSSDIR}/fonts.css
+lessc icons.less --clean-css="--s1 --advanced" ${CSSDIR}/icons.css
+lessc prose.less --clean-css="--s1 --advanced" ${CSSDIR}/prose.css
+```
+
+Finally, build ProseMirror:
+
+```bash
+cd ../prose
+npm install
+npm run-script build
 ```
 
 Now you can run and distribute WriteFreely! 🎉