diff --git a/README.md b/README.md
index 884f06c7f..42631762a 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # The Lift Web Framework
 
-[![Build Status](https://travis-ci.org/lift/framework.svg?branch=master)](https://travis-ci.org/lift/framework)
+[![Build Status](https://github.com/lift/framework/actions/workflows/ci.yaml/badge.svg?branch=main)](https://github.com/lift/framework/actions/workflows/ci.yaml)
 
 Lift is the most powerful, most secure web framework available today. There are [Seven Things](http://seventhings.liftweb.net/) that distinguish Lift from other web frameworks.
 
@@ -93,7 +93,7 @@ Logback if you don't already have another SLF4J logging library in place. For ex
 
 ```scala
 libraryDependencies ++= {
-  val liftVersion = "3.3.0"
+  val liftVersion = "4.0.0"
   Seq(
     "net.liftweb"       %% "lift-webkit" % liftVersion % "compile",
     "ch.qos.logback" % "logback-classic" % "1.2.3"
@@ -115,12 +115,13 @@ Add Lift to your `pom.xml` like so:
     <dependency>
       <groupId>net.liftweb</groupId>
       <artifactId>lift-webkit_${scala.version}</artifactId>
-      <version>3.3.0</version>
+      <version>4.0.0</version>
     </dependency>
 
-Where `${scala.version}` is `2.13` for the 4.x series. Individual patch releases of the Scala compiler
-(e.g. 2.12.2) are binary compatible with everything in their release series, so you only need the
-first two version parts.
+Where `${scala.version}` is `2.13` or `3` for the 4.x series, which cross-builds against both Scala
+2.13 and Scala 3. Individual patch releases of the Scala compiler (e.g. 2.13.18) are binary compatible
+with everything in their release series, so you only need the first version part for Scala 3, or the
+first two version parts for Scala 2.13.
 
 You can learn more about Maven integration [on the wiki](http://www.assembla.com/wiki/show/liftweb/Using_Maven).
 
@@ -147,9 +148,9 @@ We will accept issues and pull requests into the Lift codebase if the pull reque
 * The request adheres to our [contributing guidelines][contribfile], including having been discussed
   on the Mailing List if its from a non-committer.
 
-[supfile]: https://github.com/lift/framework/blob/master/SUPPORT.md
-[contribfile]: https://github.com/lift/framework/blob/master/CONTRIBUTING.md
-[sigfile]: https://github.com/lift/framework/blob/master/contributors.md
+[supfile]: https://github.com/lift/framework/blob/main/SUPPORT.md
+[contribfile]: https://github.com/lift/framework/blob/main/CONTRIBUTING.md
+[sigfile]: https://github.com/lift/framework/blob/main/contributors.md
 
 ## Project Organization
 
@@ -165,12 +166,12 @@ likely require one or more of Lift's other components.
 * **web:** This component includes all of Lift's core HTTP and web handling. Including `lift-webkit`
 in your build process should be sufficient for basic applications and will include `lift-core` as a
 transitive dependency.
-* **persistence:** This component includes Mapper and Record, Lift's two ORMs. While you needn't use
-either and can use the ORM of your choice, Mapper and Record integrate nicely with Lift's idioms.
-Mapper is an ORM for relational databases, while Record is a broader ORM with support for both SQL
-databases and NoSQL datastores.
 
-### Other Repostories
+As of Lift 4.0, the persistence components (Mapper and Record) have been removed from this
+repository. If your project relies on them, pin to a 3.x release, or use another ORM of your choice
+with Lift 4.0+.
+
+### Other Repositories
 
 There are a variety of other repositories available on the Lift GitHub page. While many are concerned with building Lift or are build program archetypes, there are two you will probably encounter fairly frequently as a Lift user:
 
@@ -190,13 +191,22 @@ The [examples](https://github.com/lift/examples) repository contains the source
 
 If you simply want to use Lift in your project, add Lift as a dependency to your build system or [download the JAR files directly](https://www.liftweb.net/download).
 
-If you wish to build Lift from source, check out this repository and use the included `liftsh` script to build some or all of the components you want.
+If you wish to build Lift from source, check out this repository and build it with [sbt](https://www.scala-sbt.org/).
+Lift no longer bundles a `liftsh` wrapper script, so you'll need `sbt` installed locally (the
+version this repository builds against is pinned in `project/build.properties`).
 
     git clone https://github.com/lift/framework.git
     cd framework
-    ./liftsh +update +publish
+    sbt +test
+    sbt +publishLocal
 
-There is [additional documentation on the wiki](http://www.assembla.com/spaces/liftweb/wiki/Building_Lift).
+The leading `+` runs the command once per entry in `crossScalaVersions`, so `sbt +test` compiles and
+runs the test suite for every module against both Scala 2.13 and Scala 3 as configured in `build.sbt`
+(a plain `sbt test`, without the `+`, only runs against the default Scala version). Likewise, `sbt
++publishLocal` publishes snapshot artifacts for both Scala versions to your local Ivy repository
+(`~/.ivy2`) so other local projects can depend on them. To build or publish a single module, prefix
+the command with its project name, e.g. `sbt webkit/publishLocal` or `sbt +webkit/publishLocal` for
+both Scala versions.
 
 ## Additional Resources
 
@@ -222,3 +232,10 @@ Lift is open source software released under the **Apache 2.0 license**.
 
 ## Continuous Integration
 
+Lift is built and tested on [GitHub Actions](https://github.com/lift/framework/actions/workflows/ci.yaml)
+against a matrix of supported Java (11, 17, 21) and Scala (2.13, 3) versions on every pull request and
+push to `main` and the active release branches. See [`.github/workflows/ci.yaml`][ciyaml] for the
+current configuration.
+
+[ciyaml]: https://github.com/lift/framework/blob/main/.github/workflows/ci.yaml
+