diff --git a/README.md b/README.md
index 6f81340..2381cf2 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@ cd ~/Sites/xb-dev
 ddev config --project-type=drupal11 --docroot=web
 
 # Create the Drupal project.
-ddev composer create drupal/recommended-project:11.x@dev --no-install
+ddev composer create drupal/recommended-project:11.x --no-install
 
 # Install the add-on.
 ddev add-on get drupal-xb/ddev-drupal-xb-dev
diff --git a/commands/host/xb-setup b/commands/host/xb-setup
index 1a40758..9f3ecb5 100755
--- a/commands/host/xb-setup
+++ b/commands/host/xb-setup
@@ -62,6 +62,11 @@ ddev composer require \
   --no-interaction \
   drush/drush
 
+# Set the minimum stability to dev, so Experience Builder can be installed.
+# The installation instructions suggest using the non-dev version of
+# `drupal/recommended-project` to match XB's CI.
+ddev composer config minimum-stability dev
+
 # Require the Experience Builder module. Still don't install.
 ddev composer config \
   repositories.xb \
@@ -74,13 +79,24 @@ ddev composer require \
   drupal/experience_builder
 
 # Require dev dependencies. NOW install.
+# We specifically require the 1.x versions of the following packages:
+# - mglaman/phpstan-drupal
+# - phpstan/phpstan
+# - phpstan/phpstan-phpunit
+# XB's codebase does not support PHPStan 2 yet, but drupal-core/dev allows
+# both 1.x and 2.x versions of these packages. This way we can install the 1.x
+# version of `jangregor/phpstan-prophecy`.
 ddev composer require \
   --dev \
   --update-with-all-dependencies \
   --no-interaction \
-  devizzent/cebe-php-openapi:^1.1.4 \
+  drupal/core-dev:~11.1 \
+  devizzent/cebe-php-openapi:^1.0.3 \
   drupal/metatag:^2. \
-  jangregor/phpstan-prophecy:^2.2.0 \
+  mglaman/phpstan-drupal:^1.3.9 \
+  phpstan/phpstan:^1.12.27 \
+  phpstan/phpstan-phpunit:^1.4.2 \
+  jangregor/phpstan-prophecy:^1.0.2 \
   league/openapi-psr7-validator:^0.22.0 \
   webflo/drupal-finder:^1.3.1