diff --git a/.cow.json b/.cow.json
index ab35f21..5b959e2 100644
--- a/.cow.json
+++ b/.cow.json
@@ -14,21 +14,5 @@
   ],
   "exclude": [
     "silverstripe/recipe-plugin"
-  ],
-  "archives": [
-    {
-      "recipe": "silverstripe/recipe-core",
-      "files": [
-        "SilverStripe-framework-v{version}.zip",
-        "SilverStripe-framework-v{version}.tar.gz"
-      ]
-    },
-    {
-      "recipe": "silverstripe/installer",
-      "files": [
-        "SilverStripe-cms-v{version}.zip",
-        "SilverStripe-cms-v{version}.tar.gz"
-      ]
-    }
   ]
 }
diff --git a/.travis.yml b/.travis.yml
index 21aaac1..d1a92dd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -21,7 +21,7 @@ addons:
 env:
   global:
     - TRAVIS_NODE_VERSION="6"
-    - COMPOSER_ROOT_VERSION="4.5.x-dev"
+    - COMPOSER_ROOT_VERSION="4.6.x-dev"
     - SS_BASE_URL="http://localhost:8080/"
     - SS_ENVIRONMENT_TYPE="dev"
 
@@ -87,7 +87,7 @@ before_script:
 
 # Install composer dependencies
   - composer validate
-  - if [[ $DB == PGSQL ]]; then composer require --no-update silverstripe/postgresql:2.2.x-dev; fi
+  - if [[ $DB == PGSQL ]]; then composer require --no-update silverstripe/postgresql:2.4.x-dev; fi
   - if [[ $BEHAT_TEST ]]; then composer require --no-update silverstripe/recipe-testing:^1; fi;
   - if [[ $HEALTH_TEST ]]; then composer require --no-update silverstripe/serve:^2; fi;
   - if ! [[ $HEALTH_TEST ]]; then composer install --prefer-source --no-interaction --no-progress --no-suggest --optimize-autoloader --verbose --profile; fi;
diff --git a/composer.json b/composer.json
index d6e2f77..e812eee 100644
--- a/composer.json
+++ b/composer.json
@@ -5,7 +5,7 @@
     "require": {
         "php": ">=7.1.0",
         "silverstripe/recipe-plugin": "^1.2",
-        "silverstripe/recipe-cms": "4.5.x-dev",
+        "silverstripe/recipe-cms": "4.6.x-dev",
         "silverstripe-themes/simple": "~3.2.0"
     },
     "require-dev": {
@@ -21,7 +21,7 @@
             "favicon.ico"
         ],
         "branch-alias": {
-            "4.x-dev": "4.5.x-dev"
+            "4.x-dev": "4.6.x-dev"
         },
         "resources-dir": "_resources"
     },