diff --git a/composer-dist.json b/composer-dist.json
index 80806c777..c68e58a28 100644
--- a/composer-dist.json
+++ b/composer-dist.json
@@ -26,6 +26,7 @@
         "zf1/zend-search-lucene": "*",
         "symfony/http-foundation": "^5.4",
         "php-di/php-di": "^6.4",
+        "hfig/mapi": "*",
         "slim/psr7": "^1.7",
         "bacon/bacon-qr-code": "^3.0",
         "seeddms/core": "dev-__CORE_BRANCH__",
diff --git a/composer.json b/composer.json
index 5c756707b..5bdcf9674 100644
--- a/composer.json
+++ b/composer.json
@@ -44,6 +44,7 @@
         "zf1/zend-search-lucene": "*",
         "symfony/http-foundation": "^5.4",
         "php-di/php-di": "^6.4",
+        "hfig/mapi": "*",
         "slim/psr7": "^1.7",
         "bacon/bacon-qr-code": "^3.0",
         "seeddms/core": "dev-seeddms-5.1.x",