diff --git a/composer.json b/composer.json
index f2e3855031..15ddd0f656 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
 	"require": {
 		"doctrine/dbal": "2.*",
-		"slim/slim": "2.*",
+		"slim/slim": "2.4.2",
 		"mtdowling/cron-expression": "1.0.*",
 		"zendframework/zend-validator": "2.*",
 		"zendframework/zend-mail": "2.5.2",
diff --git a/composer.lock b/composer.lock
index ba8ac818f5..03a7e476c0 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,8 +4,8 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "db035a3a8588328c27b938c919c9ad36",
-    "content-hash": "44324609c64eb3f36213a310b3b1dc2b",
+    "hash": "e599a4ab425b29d1e585685684a0bffd",
+    "content-hash": "81595e763c766d29eca4a5b03a007f2f",
     "packages": [
         {
             "name": "composer/semver",