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-rw-r--r--composer.json1
1 files changed, 1 insertions, 0 deletions
diff --git a/composer.json b/composer.json
index 40fbd84..9f0e277 100644
--- a/composer.json
+++ b/composer.json
@@ -23,6 +23,7 @@
"source": "https://central.hoa-project.net/Resource/Library/Graph"
},
"require": {
+ "php" : ">=5.5.0",
"hoa/consistency": "~1.0",
"hoa/exception" : "~1.0",
"hoa/iterator" : "~2.0"