diff --git a/upgrades/9.0/scripts/BeforeUpgrade.php b/upgrades/9.0/scripts/BeforeUpgrade.php
index 9d3d577bbc..d9942dc4ea 100644
--- a/upgrades/9.0/scripts/BeforeUpgrade.php
+++ b/upgrades/9.0/scripts/BeforeUpgrade.php
@@ -66,6 +66,7 @@ class BeforeUpgrade
     {
         $skipPathRegexList = [
             '^custom\/Espo\/Modules\/[^\/]+\/vendor',
+            '^custom\/Espo\/Custom\/vendor',
             '^application\/Espo\/Modules\/[^\/]+\/vendor',
             "^custom\/Espo\/Modules\/Sales\/",
         ];