diff --git a/composer.json b/composer.json
index c89e71668..3a5810285 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
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-        "phpunit/phpunit" : "4.7.*",
+        "phpunit/phpunit" : "4.7.* || 4.8.*",
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diff --git a/composer.lock b/composer.lock
index fbf470dab..f21f789fd 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1,11 +1,10 @@
 {
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         "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",
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@@ -2378,42 +2389,46 @@
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@@ -2441,7 +2456,11 @@
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@@ -2503,20 +2522,25 @@
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@@ -2591,7 +2620,11 @@
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@@ -2640,20 +2673,24 @@
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@@ -3511,7 +3672,11 @@
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@@ -3524,5 +3689,6 @@
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