diff --git a/core/lib/Drupal/Component/DependencyInjection/composer.json b/core/lib/Drupal/Component/DependencyInjection/composer.json
index eab1c95..8dda45f 100644
--- a/core/lib/Drupal/Component/DependencyInjection/composer.json
+++ b/core/lib/Drupal/Component/DependencyInjection/composer.json
@@ -13,7 +13,7 @@
   "require": {
     "php": ">=5.5.9",
     "symfony/dependency-injection": "~2.8",
-    "symfony/expression-language": "~2.8"
+    "symfony/expression-language": "~2.7"
   },
   "autoload": {
     "psr-4": {
diff --git a/core/lib/Drupal/Component/EventDispatcher/composer.json b/core/lib/Drupal/Component/EventDispatcher/composer.json
index b72e600..be66232 100644
--- a/core/lib/Drupal/Component/EventDispatcher/composer.json
+++ b/core/lib/Drupal/Component/EventDispatcher/composer.json
@@ -7,7 +7,7 @@
   "require": {
     "php": ">=5.5.9",
     "symfony/dependency-injection": "~2.8",
-    "symfony/event-dispatcher": "~2.8"
+    "symfony/event-dispatcher": "~2.7"
   },
   "autoload": {
     "psr-4": {
diff --git a/core/lib/Drupal/Component/HttpFoundation/composer.json b/core/lib/Drupal/Component/HttpFoundation/composer.json
index fd3fc08..f82c067 100644
--- a/core/lib/Drupal/Component/HttpFoundation/composer.json
+++ b/core/lib/Drupal/Component/HttpFoundation/composer.json
@@ -6,7 +6,7 @@
   "license": "GPL-2.0+",
   "require": {
     "php": ">=5.5.9",
-    "symfony/http-foundation": "~2.8"
+    "symfony/http-foundation": "~2.7"
   },
   "autoload": {
     "psr-4": {
diff --git a/core/lib/Drupal/Component/Plugin/composer.json b/core/lib/Drupal/Component/Plugin/composer.json
index 3b72ee5..4ffeeed 100644
--- a/core/lib/Drupal/Component/Plugin/composer.json
+++ b/core/lib/Drupal/Component/Plugin/composer.json
@@ -6,7 +6,7 @@
   "license": "GPL-2.0+",
   "require": {
     "php": ">=5.5.9",
-    "symfony/validator": "~2.8"
+    "symfony/validator": "~2.7"
   },
   "autoload": {
     "psr-4": {
diff --git a/core/lib/Drupal/Component/Serialization/composer.json b/core/lib/Drupal/Component/Serialization/composer.json
index ff249fe..5d629cf 100644
--- a/core/lib/Drupal/Component/Serialization/composer.json
+++ b/core/lib/Drupal/Component/Serialization/composer.json
@@ -6,7 +6,7 @@
   "license": "GPL-2.0+",
   "require": {
     "php": ">=5.5.9",
-    "symfony/yaml": "~2.8"
+    "symfony/yaml": "~2.7"
   },
   "autoload": {
     "psr-4": {