diff --git a/src/Symfony/Contracts/Cache/composer.json b/src/Symfony/Contracts/Cache/composer.json
index ee73315d75..97eabec6a7 100644
--- a/src/Symfony/Contracts/Cache/composer.json
+++ b/src/Symfony/Contracts/Cache/composer.json
@@ -29,6 +29,10 @@
     "extra": {
         "branch-alias": {
             "dev-master": "1.1-dev"
+        },
+        "thanks": {
+            "name": "symfony/contracts",
+            "url": "https://github.com/symfony/contracts"
         }
     }
 }
diff --git a/src/Symfony/Contracts/EventDispatcher/composer.json b/src/Symfony/Contracts/EventDispatcher/composer.json
index a66eb4e01a..862c2565f0 100644
--- a/src/Symfony/Contracts/EventDispatcher/composer.json
+++ b/src/Symfony/Contracts/EventDispatcher/composer.json
@@ -29,6 +29,10 @@
     "extra": {
         "branch-alias": {
             "dev-master": "1.1-dev"
+        },
+        "thanks": {
+            "name": "symfony/contracts",
+            "url": "https://github.com/symfony/contracts"
         }
     }
 }
diff --git a/src/Symfony/Contracts/HttpClient/composer.json b/src/Symfony/Contracts/HttpClient/composer.json
index 33a1f372ef..2382aa7a02 100644
--- a/src/Symfony/Contracts/HttpClient/composer.json
+++ b/src/Symfony/Contracts/HttpClient/composer.json
@@ -28,6 +28,10 @@
     "extra": {
         "branch-alias": {
             "dev-master": "1.1-dev"
+        },
+        "thanks": {
+            "name": "symfony/contracts",
+            "url": "https://github.com/symfony/contracts"
         }
     }
 }
diff --git a/src/Symfony/Contracts/Service/composer.json b/src/Symfony/Contracts/Service/composer.json
index 293734edfb..58748f3740 100644
--- a/src/Symfony/Contracts/Service/composer.json
+++ b/src/Symfony/Contracts/Service/composer.json
@@ -29,6 +29,10 @@
     "extra": {
         "branch-alias": {
             "dev-master": "1.1-dev"
+        },
+        "thanks": {
+            "name": "symfony/contracts",
+            "url": "https://github.com/symfony/contracts"
         }
     }
 }
diff --git a/src/Symfony/Contracts/Translation/composer.json b/src/Symfony/Contracts/Translation/composer.json
index 2ca39fee19..7a449e0ebf 100644
--- a/src/Symfony/Contracts/Translation/composer.json
+++ b/src/Symfony/Contracts/Translation/composer.json
@@ -28,6 +28,10 @@
     "extra": {
         "branch-alias": {
             "dev-master": "1.1-dev"
+        },
+        "thanks": {
+            "name": "symfony/contracts",
+            "url": "https://github.com/symfony/contracts"
         }
     }
 }