diff --git a/composer.json b/composer.json
index 86b5f636f8..1a92ca9757 100755
--- a/composer.json
+++ b/composer.json
@@ -65,9 +65,9 @@
         "sabre/vobject": "~3.1",
 
         "emojione/emojione": "1.3.0",
-        "zendframework/zend-config": "~2.6",
-        "zendframework/zend-feed": "~2.7",
-        "zendframework/zend-http": "^2.5",
+        "zendframework/zend-config": "2.5.1",
+        "zendframework/zend-feed": "2.5.1",
+        "zendframework/zend-http": "2.5.1",
 
         "ezyang/htmlpurifier": "4.6.0",
         "szymach/c-pchart": "1.*",