diff --git a/objects/email/definition.json b/objects/email/definition.json
index 770850f..7551d0c 100644
--- a/objects/email/definition.json
+++ b/objects/email/definition.json
@@ -3,7 +3,7 @@
   "uuid": "a0c666e0-fc65-4be8-b48f-3423d788b552",
   "meta-category": "network",
   "description": "Email object describing an email with meta-information",
-  "version": 8,
+  "version": 10,
   "attributes": {
     "reply-to": {
       "description": "Email address the reply will be sent to",
@@ -146,6 +146,11 @@
       "categories": [
         "Payload delivery"
       ]
+    },
+    "eml": {
+      "description": "Full EML",
+      "misp-attribute": "attachment",
+      "ui-priority": 1
     }
   },
   "requiredOneOf": [
@@ -163,6 +168,8 @@
     "thread-index",
     "header",
     "x-mailer",
-    "return-path"
+    "return-path",
+    "email-body",
+    "eml"
   ]
 }
diff --git a/objects/whois/definition.json b/objects/whois/definition.json
index 0c4d5b0..ed91c86 100644
--- a/objects/whois/definition.json
+++ b/objects/whois/definition.json
@@ -74,6 +74,7 @@
         "External analysis"
       ],
       "ui-priority": 0,
+      "multiple": true,
       "misp-attribute": "domain"
     },
     "comment": {
@@ -84,10 +85,11 @@
     "ip-address": {
       "description": "IP address of the whois entry",
       "ui-priority": 0,
+      "multiple": true,
       "misp-attribute": "ip-src"
     }
   },
-  "version": 9,
+  "version": 10,
   "description": "Whois records information for a domain name or an IP address.",
   "meta-category": "network",
   "uuid": "429faea1-34ff-47af-8a00-7c62d3be5a6a",
diff --git a/relationships/definition.json b/relationships/definition.json
index ae5f3db..d238116 100644
--- a/relationships/definition.json
+++ b/relationships/definition.json
@@ -33,6 +33,22 @@
         "stix-1.1"
       ]
     },
+    {
+      "name": "contains",
+      "description": "The references source is containing the target object.",
+      "format": [
+        "misp",
+        "stix-1.1"
+      ]
+    },
+    {
+      "name": "resolved-to",
+      "description": "The referenced source is resolved to the target object.",
+      "format": [
+        "misp",
+        "stix-1.1"
+      ]
+    },
     {
       "name": "attributed-to",
       "description": "This referenced source is attributed to the target object.",