diff --git a/composer.json b/composer.json
index d3832a5..6bf3981 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,7 @@
         }
     ],
     "require": {
-        "php": ">=7.2",
+        "php": ">=7.2|^8.0",
         "ext-gmp": "*",
         "sop/asn1": "^4.0.0",
         "sop/x501": "^0.6.1",
@@ -37,4 +37,4 @@
             "Sop\\X509\\": "lib/X509/"
         }
     }
-}
\ No newline at end of file
+}