diff --git a/composer.json b/composer.json
index aae7ec01..9ffafa17 100644
--- a/composer.json
+++ b/composer.json
@@ -10,6 +10,7 @@
         "ext-fileinfo": "*",
         "ext-iconv": "*",
         "ext-json": "*",
+        "ext-openssl": "*",
         "ext-pdo": "*",
         "ext-simplexml": "*",
         "ext-zip": "*",