diff --git a/composer.json b/composer.json
index 02690c6..72d6ce6 100644
--- a/composer.json
+++ b/composer.json
@@ -5,10 +5,10 @@
     "license": "GPL-2.0+",
     "require": {
         "composer/installers": "^1.0.24",
-        "wikimedia/composer-merge-plugin": "~1.3"
+        "wikimedia/composer-merge-plugin": "^1.3"
     },
     "replace": {
-        "drupal/core": "~8.4"
+        "drupal/core": "^8.4"
     },
     "minimum-stability": "dev",
     "prefer-stable": true,
diff --git a/core/composer.json b/core/composer.json
index 1f25c46..7e74290 100644
--- a/core/composer.json
+++ b/core/composer.json
@@ -5,47 +5,47 @@
     "license": "GPL-2.0+",
     "require": {
         "php": ">=5.5.9",
-        "symfony/class-loader": "~3.2",
-        "symfony/console": "~3.2",
-        "symfony/dependency-injection": "~3.2",
-        "symfony/event-dispatcher": "~3.2",
-        "symfony/http-foundation": "~3.2",
-        "symfony/http-kernel": "~3.2",
-        "symfony/routing": "~3.2",
-        "symfony/serializer": "~3.2",
-        "symfony/translation": "~3.2",
-        "symfony/validator": "~3.2",
-        "symfony/process": "~3.2",
-        "symfony/polyfill-iconv": "~1.0",
-        "symfony/yaml": "~3.2",
+        "symfony/class-loader": "^3.2",
+        "symfony/console": "^3.2",
+        "symfony/dependency-injection": "^3.2",
+        "symfony/event-dispatcher": "^3.2",
+        "symfony/http-foundation": "^3.2",
+        "symfony/http-kernel": "^3.2",
+        "symfony/routing": "^3.2",
+        "symfony/serializer": "^3.2",
+        "symfony/translation": "^3.2",
+        "symfony/validator": "^3.2",
+        "symfony/process": "^3.2",
+        "symfony/polyfill-iconv": "^1.0",
+        "symfony/yaml": "^3.2",
         "twig/twig": "^1.23.1",
         "doctrine/common": "^2.5",
-        "doctrine/annotations": "1.2.*",
+        "doctrine/annotations": "^1.2",
         "guzzlehttp/guzzle": "^6.2.1",
-        "symfony-cmf/routing": "~1.4",
-        "easyrdf/easyrdf": "0.9.*",
-        "zendframework/zend-feed": "~2.4",
-        "stack/builder": "1.0.*",
-        "egulias/email-validator": "1.2.*",
-        "masterminds/html5": "~2.1",
+        "symfony-cmf/routing": "^1.4",
+        "easyrdf/easyrdf": "^0.9",
+        "zendframework/zend-feed": "^2.4",
+        "stack/builder": "^1.0",
+        "egulias/email-validator": "^1.2",
+        "masterminds/html5": "^2.1",
         "symfony/psr-http-message-bridge": "^1.0",
-        "zendframework/zend-diactoros": "~1.1",
-        "composer/semver": "~1.0",
+        "zendframework/zend-diactoros": "^1.1",
+        "composer/semver": "^1.0",
         "paragonie/random_compat": "^1.0|^2.0",
-        "asm89/stack-cors": "~1.1"
+        "asm89/stack-cors": "^1.1"
     },
     "conflict": {
         "drush/drush": "<8.1.10"
     },
     "require-dev": {
         "behat/mink": "1.7.x-dev",
-        "behat/mink-goutte-driver": "~1.2",
-        "drupal/coder": "8.2.12",
-        "jcalderonzumba/gastonjs": "~1.0.2",
-        "jcalderonzumba/mink-phantomjs-driver": "~0.3.1",
-        "mikey179/vfsStream": "~1.2",
+        "behat/mink-goutte-driver": "^1.2",
+        "drupal/coder": "^8.2.12",
+        "jcalderonzumba/gastonjs": "^1.0.2",
+        "jcalderonzumba/mink-phantomjs-driver": "^0.3.1",
+        "mikey179/vfsStream": "^1.2",
         "phpunit/phpunit": ">=4.8.35 <5",
-        "symfony/css-selector": "~3.2",
+        "symfony/css-selector": "^3.2",
         "symfony/phpunit-bridge": "^3.2"
     },
     "replace": {