Fixes #1985: Cannot upgrade to Drupal 8.4 with a released version of BLT because of drush version.

CHANGELOG.md

@@ -1,5 +1,49 @@
 # Change Log
 
+## [8.9.3](https://github.com/acquia/blt/tree/8.9.3) (2017-09-12)
+[Full Changelog](https://github.com/acquia/blt/compare/8.9.2...8.9.3)
+
+**Implemented enhancements:**
+
+- Use the latest chromedriver. [\#1967](https://github.com/acquia/blt/pull/1967) ([ericchenshine](https://github.com/ericchenshine))
+- Adds manual port information for SimpleSAML when on Acquia Cloud. [\#1958](https://github.com/acquia/blt/pull/1958) ([typhonius](https://github.com/typhonius))
+- Adds template for allowing warnings/errors to succeed. [\#1937](https://github.com/acquia/blt/pull/1937) ([grahl](https://github.com/grahl))
+
+**Fixed bugs:**
+
+- Check if server\['USER'\] is defined. [\#1928](https://github.com/acquia/blt/pull/1928) ([thom8](https://github.com/thom8))
+- Fixes \#1935: features-import-all build step errors do not fail build. [\#1942]
+- BLT-1962: adding environment calls to pipelines scripts. [\#1963](https://github.com/acquia/blt/pull/1963) ([mikemadison13](https://github.com/mikemadison13))
+- Fixes \#1914: BLT Schema out of date process. [\#1943](https://github.com/acquia/blt/pull/1943) ([grasmash](https://github.com/grasmash))
+- Fix blt sync:files command so it runs outside VM [\#1911](https://github.com/acquia/blt/pull/1911) ([gabe-connolly](https://github.com/gabe-connolly))
+- Travis should only exit early for docs on PRs. [\#1912](https://github.com/acquia/blt/pull/1912) ([danepowell](https://github.com/danepowell))
+
+
+## [8.9.2](https://github.com/acquia/blt/tree/8.9.2) (2017-08-09)
+[Full Changelog](https://github.com/acquia/blt/compare/8.9.1...8.9.2)
+
+**Implemented enhancements:**
+
+- Scaffold  composer files required by merge plugin. [\#1849](https://github.com/acquia/blt/issues/1849)
+- Fixes \#1903: 8.9.1 Feedback. [\#1904](https://github.com/acquia/blt/pull/1904) ([grasmash](https://github.com/grasmash))))
+- Adding phpcs.xml. [\#1895](https://github.com/acquia/blt/pull/1895) ([grasmash](https://github.com/grasmash))
+
+**Fixed bugs:**
+
+- setup:behat overwrites behat.yml and example.local.yml [\#1898](https://github.com/acquia/blt/issues/1898)
+- Couldn't create a new project with blt [\#1896](https://github.com/acquia/blt/issues/1896)
+- Small fix to custom Drupal-VM. [\#1902](https://github.com/acquia/blt/pull/1902) ([dpagini](https://github.com/dpagini))
+- Fixes \#1898: setup:behat overwrites behat.yml and example.local.yml. [\#1899](https://github.com/acquia/blt/pull/1899) ([grasmash](https://github.com/grasmash))
+
+**Closed issues:**
+
+- phpcs: haltonwarning no longer available [\#1889](https://github.com/acquia/blt/issues/1889)
+
+**Misc merged pull requests**
+
+- Fixes \#1889: phpcs: haltonwarning no longer available. [\#1897](https://github.com/acquia/blt/pull/1897) ([grasmash](https://github.com/grasmash))
+
+
 ## [8.9.1](https://github.com/acquia/blt/tree/8.9.1) (2017-08-08)
 [Full Changelog](https://github.com/acquia/blt/compare/8.9.0...8.9.1)
 

composer.json

@@ -22,7 +22,7 @@
         "oomphinc/composer-installers-extender": "^1.1",
         "dflydev/dot-access-data":          "^1.1.0",
         "drupal/coder":                     "^8.2.11",
-        "drush/drush":                      "^8.1.10",
+        "drush/drush":                      "^8.1.8|^9.0.0-beta4",
         "grasmash/drupal-security-warning": "^1.0.0",
         "grasmash/yaml-cli":                "^1.0.0",
         "grasmash/yaml-expander":           "^1.0.5",