diff --git a/composer.json b/composer.json
index b99afb4895..d48447bd31 100644
--- a/composer.json
+++ b/composer.json
@@ -30,21 +30,21 @@
         "sensio/generator-bundle": "~2.3",
         "incenteev/composer-parameter-handler": "~2.0",
         "tedivm/stash-bundle": "~0.4",
-        "ezsystems/ezpublish-kernel": "^6.5",
-        "ezsystems/repository-forms": "^1.4",
-        "ezsystems/ezplatform-solr-search-engine": "^1.1",
-        "ezsystems/platform-ui-bundle": "^1.5",
-        "ezsystems/ez-support-tools": "~0.1.0",
-        "ezsystems/studio-ui-bundle": "^1.5",
-        "ezsystems/ezstudio-notifications": "^1.2",
-        "ezsystems/landing-page-fieldtype-bundle": "^1.5",
-        "ezsystems/flex-workflow": "^1.5",
+        "ezsystems/ezpublish-kernel": "^6.5@dev",
+        "ezsystems/repository-forms": "^1.4@dev",
+        "ezsystems/ezplatform-solr-search-engine": "^1.1@dev",
+        "ezsystems/platform-ui-bundle": "^1.5@dev",
+        "ezsystems/ez-support-tools": "~0.1.0@dev",
+        "ezsystems/studio-ui-bundle": "^1.5@dev",
+        "ezsystems/ezstudio-notifications": "^1.2@dev",
+        "ezsystems/landing-page-fieldtype-bundle": "^1.5@dev",
+        "ezsystems/flex-workflow": "^1.5@dev",
         "egulias/listeners-debug-command-bundle": "~1.9",
         "hautelook/templated-uri-bundle": "~1.0 | ~2.0",
         "doctrine/doctrine-bundle": "~1.3",
         "symfony/expression-language": "~2.4",
         "sensio/framework-extra-bundle": "~3.0",
-        "ezsystems/ezstudio-installer": "^1.2"
+        "ezsystems/ezstudio-installer": "^1.2@dev"
     },
     "require-dev": {
         "behat/behat": "~3.0",