diff --git a/composer.json b/composer.json
index 383b441f9..22ff6a9bd 100644
--- a/composer.json
+++ b/composer.json
@@ -30,29 +30,29 @@
         "sensio/generator-bundle": "~2.3",
         "incenteev/composer-parameter-handler": "~2.0",
         "tedivm/stash-bundle": "~0.4",
-        "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/ezpublish-kernel": "~6.5.0@dev",
+        "ezsystems/repository-forms": "~1.4.0@dev",
+        "ezsystems/ezplatform-solr-search-engine": "~1.1.0@dev",
+        "ezsystems/platform-ui-bundle": "~1.5.0@dev",
         "ezsystems/ez-support-tools": "~0.1.0@dev",
-        "ezsystems/comments-bundle": "~6.0@dev",
-        "ezsystems/studio-ui-bundle": "^1.5@dev",
-        "ezsystems/ezstudio-notifications": "^1.2@dev",
-        "ezsystems/landing-page-fieldtype-bundle": "^1.5@dev",
-        "ezsystems/ezstudio-demo-bundle": "^1.5@dev",
-        "ezsystems/ezstudio-demo-bundle-data": "^1.5@dev",
-        "ezsystems/share-buttons-bundle": "~1.1@dev",
-        "ezsystems/flex-workflow": "^1.5@dev",
+        "ezsystems/comments-bundle": "~6.0.0@dev",
+        "ezsystems/studio-ui-bundle": "~1.5.0@dev",
+        "ezsystems/ezstudio-notifications": "~1.2.0@dev",
+        "ezsystems/landing-page-fieldtype-bundle": "~1.5.0@dev",
+        "ezsystems/ezstudio-demo-bundle": "~1.5.0@dev",
+        "ezsystems/ezstudio-demo-bundle-data": "~1.5.0@dev",
+        "ezsystems/share-buttons-bundle": "~1.1.0@dev",
+        "ezsystems/flex-workflow": "~1.5.0@dev",
         "egulias/listeners-debug-command-bundle": "~1.9",
         "white-october/pagerfanta-bundle": "1.0.*",
         "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/content-on-the-fly-prototype": "^0.1.6@dev",
-        "ezsystems/platform-ui-search-prototype-bundle": "^0.1.3@dev",
+        "ezsystems/content-on-the-fly-prototype": "~0.1.6@dev",
+        "ezsystems/platform-ui-search-prototype-bundle": "~0.1.3@dev",
         "components/handlebars.js": "~3.0.0",
-        "ezsystems/recommendation-bundle": "^1.0@dev"
+        "ezsystems/recommendation-bundle": "~1.0.0@dev"
     },
     "require-dev": {
         "behat/behat": "~3.0",