diff --git a/composer.json b/composer.json
index 3694f3a5..dd3b7a97 100644
--- a/composer.json
+++ b/composer.json
@@ -20,7 +20,7 @@
     ],
     "require": {
         "php": "^8.1",
-        "silverstripe/framework": "^5",
+        "silverstripe/framework": "^5.1",
         "silverstripe/vendor-plugin": "^2",
         "symfony/filesystem": "^6.1",
         "intervention/image": "^2.7.2",
diff --git a/src/File.php b/src/File.php
index a6dfb855..017ca8fc 100644
--- a/src/File.php
+++ b/src/File.php
@@ -397,6 +397,14 @@ public function canView($member = null)
             return $member->inGroups($this->ViewerGroups());
         }
 
+        // Specific users can view this file
+        if ($this->CanViewType === InheritedPermissions::ONLY_THESE_MEMBERS) {
+            if (!$member) {
+                return false;
+            }
+            return $this->ViewerMembers()->filter('ID', $member->ID)->count() > 0;
+        }
+
         // Check default root level permissions
         return $this->getPermissionChecker()->canView($this->ID, $member);
     }
@@ -423,7 +431,7 @@ public function canEdit($member = null)
         }
 
         // Delegate to parent if inheriting permissions
-        if ($this->CanEditType === 'Inherit' && $this->ParentID) {
+        if ($this->CanEditType === InheritedPermissions::INHERIT && $this->ParentID) {
             return $this->getPermissionChecker()->canEdit($this->ParentID, $member);
         }
 
@@ -518,7 +526,11 @@ private function hasRestrictedPermissions(File $file): bool
         $id = $file->ID;
         $parentID = $file->ParentID;
         $canViewType = $file->CanViewType;
-        if (in_array($canViewType, [InheritedPermissions::LOGGED_IN_USERS, InheritedPermissions::ONLY_THESE_USERS])) {
+        if (in_array($canViewType, [
+                InheritedPermissions::LOGGED_IN_USERS,
+                InheritedPermissions::ONLY_THESE_USERS,
+                InheritedPermissions::ONLY_THESE_MEMBERS,
+            ])) {
             self::$has_restricted_permissions_cache[$id] = true;
             return true;
         }