diff --git a/composer.lock b/composer.lock
index 5831ca89..a43de413 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1,7 +1,7 @@
 {
     "_readme": [
         "This file locks the dependencies of your project to a known state",
-        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
     "content-hash": "1ad298d75b7e5c96f85c2c32a24e2502",
@@ -620,16 +620,16 @@
         },
         {
             "name": "slim/slim",
-            "version": "3.12.0",
+            "version": "3.12.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/slimphp/Slim.git",
-                "reference": "f4947cc900b6e51cbfda58b9f1247bca2f76f9f0"
+                "reference": "eaee12ef8d0750db62b8c548016d82fb33addb6b"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/slimphp/Slim/zipball/f4947cc900b6e51cbfda58b9f1247bca2f76f9f0",
-                "reference": "f4947cc900b6e51cbfda58b9f1247bca2f76f9f0",
+                "url": "https://api.github.com/repos/slimphp/Slim/zipball/eaee12ef8d0750db62b8c548016d82fb33addb6b",
+                "reference": "eaee12ef8d0750db62b8c548016d82fb33addb6b",
                 "shasum": ""
             },
             "require": {
@@ -687,7 +687,7 @@
                 "micro",
                 "router"
             ],
-            "time": "2019-01-15T13:21:25+00:00"
+            "time": "2019-04-16T16:47:29+00:00"
         },
         {
             "name": "slim/twig-view",