diff --git a/composer.json b/composer.json
index f787f94a..8321ec93 100644
--- a/composer.json
+++ b/composer.json
@@ -24,7 +24,7 @@
     "drupal/eva" : "^2.0",
     "drupal/features" : "^3.7",
     "drupal/migrate_plus" : "^5.1",
-    "drupal/migrate_tools" : "^5.0",
+    "drupal/migrate_tools" : "5.0",
     "drupal/migrate_source_csv" : "^3.4",
     "drupal/token" : "^1.3",
     "drupal/flysystem" : "^2.0@alpha",
@@ -32,6 +32,9 @@
     "drupal/file_replace": "^1.1"
 
   },
+  "conflict": {
+    "drush/drush" : ">=10.4"
+  },
   "require-dev": {
     "phpunit/phpunit": "^6",
     "squizlabs/php_codesniffer": "2.7.1",