diff --git a/composer.json b/composer.json
index fe77cdb..5977415 100644
--- a/composer.json
+++ b/composer.json
@@ -20,7 +20,7 @@
     "composer/composer": "1.5.6",
     "consolidation/robo": "^1",
     "phpunit/phpunit": "6.5.4",
-    "sensiolabs/security-checker": "^4.0"
+    "sensiolabs/security-checker": "v4.1.8"
   },
   "autoload": {
     "psr-4": {
diff --git a/composer.lock b/composer.lock
index 10c006b..9f19543 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "content-hash": "bec2b551de74944e7c778678f7e972b7",
+    "content-hash": "07604212f4794af126ca55bb0520e3e5",
     "packages": [],
     "packages-dev": [
         {
@@ -2464,16 +2464,16 @@
         },
         {
             "name": "sensiolabs/security-checker",
-            "version": "v4.1.7",
+            "version": "v4.1.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sensiolabs/security-checker.git",
-                "reference": "d539ccba2b4dce515de04f16b7ed7ae5b9eeb434"
+                "reference": "dc270d5fec418cc6ac983671dba5d80ffaffb142"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sensiolabs/security-checker/zipball/d539ccba2b4dce515de04f16b7ed7ae5b9eeb434",
-                "reference": "d539ccba2b4dce515de04f16b7ed7ae5b9eeb434",
+                "url": "https://api.github.com/repos/sensiolabs/security-checker/zipball/dc270d5fec418cc6ac983671dba5d80ffaffb142",
+                "reference": "dc270d5fec418cc6ac983671dba5d80ffaffb142",
                 "shasum": ""
             },
             "require": {
@@ -2505,7 +2505,7 @@
                 }
             ],
             "description": "A security checker for your composer.lock",
-            "time": "2018-01-11T05:54:03+00:00"
+            "time": "2018-02-28T22:10:01+00:00"
         },
         {
             "name": "symfony/console",