diff --git a/composer.json b/composer.json
index 34d781695fc72a89896e7f6616aab8cb7e582b23..6b03ef4c869ac5b775021d538caaf550b0c81eee 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
         }
     ],
     "require": {
-        "php": "^7.1",
+        "php": "^7.0",
         "typo3/cms-core": "^8.7.0 || ^9.5.1"
     },
     "require-dev": {
diff --git a/ext_emconf.php b/ext_emconf.php
index e73d524c1bf4d3a998b242995a64c16c74e6a35e..4f2e0d6a00a222a0d89491106cc3d56b3aace2a6 100644
--- a/ext_emconf.php
+++ b/ext_emconf.php
@@ -19,7 +19,7 @@ $EM_CONF['sg_mail'] = [
 	'constraints' => [
 		'depends' => [
 			'typo3' => '8.7.0-9.5.99',
-			'php' => '7.1.0-',
+			'php' => '7.0.0-',
 		],
 		'conflicts' => [
 		],