diff --git a/composer.json-dist b/composer.json-dist
index a7b7d69..e771f11 100644
--- a/composer.json-dist
+++ b/composer.json-dist
@@ -1,27 +1,28 @@
 {
     "name": "kolab/syncroton",
     "description": "The ActiveSync Service for Kolab",
     "license": "AGPL-3.0+",
     "repositories": [
         {
             "type": "vcs",
             "url": "https://git.kolab.org/diffusion/PNL/php-net_ldap.git"
         }
     ],
     "require": {
         "php": ">=5.4.0",
         "pear/pear-core-minimal": "~1.10.1",
         "pear/net_socket": "~1.2.1",
         "pear/auth_sasl": "~1.1.0",
         "pear/net_idna2": "~0.2.0",
         "pear/mail_mime": "~1.10.0",
         "pear/net_smtp": "~1.7.1",
         "pear/net_ldap2": "~2.2.0",
         "pear/net_sieve": "~1.4.0",
         "kolab/net_ldap3": "dev-master",
-        "zf1/zend-log": "~1.12.11"
+        "zf1s/zend-json": "~1.12.20",
+        "zf1s/zend-log": "~1.12.20"
     },
     "require-dev": {
         "phpunit/phpunit": "^4.8 || ^5.7 || ^6 || ^7"
     }
 }