diff --git a/composer.lock b/composer.lock
index 3eaa14be..c7280479 100644
--- a/composer.lock
+++ b/composer.lock
@@ -3449,16 +3449,16 @@
         },
         {
             "name": "psy/psysh",
-            "version": "v0.8.17",
+            "version": "v0.8.18",
             "source": {
                 "type": "git",
                 "url": "https://github.com/bobthecow/psysh.git",
-                "reference": "5069b70e8c4ea492c2b5939b6eddc78bfe41cfec"
+                "reference": "5357b1cffc8fb375d6a9e3c86d5c82dd38a40834"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/bobthecow/psysh/zipball/5069b70e8c4ea492c2b5939b6eddc78bfe41cfec",
-                "reference": "5069b70e8c4ea492c2b5939b6eddc78bfe41cfec",
+                "url": "https://api.github.com/repos/bobthecow/psysh/zipball/5357b1cffc8fb375d6a9e3c86d5c82dd38a40834",
+                "reference": "5357b1cffc8fb375d6a9e3c86d5c82dd38a40834",
                 "shasum": ""
             },
             "require": {
@@ -3517,7 +3517,7 @@
                 "interactive",
                 "shell"
             ],
-            "time": "2017-12-28T16:14:16+00:00"
+            "time": "2018-04-02T05:41:44+00:00"
         },
         {
             "name": "ramsey/uuid",