diff --git a/apps/ios/Shared/Views/Chat/ChatItem/MsgContentView.swift b/apps/ios/Shared/Views/Chat/ChatItem/MsgContentView.swift
index 3212f3f512..30ed3fa1a4 100644
--- a/apps/ios/Shared/Views/Chat/ChatItem/MsgContentView.swift
+++ b/apps/ios/Shared/Views/Chat/ChatItem/MsgContentView.swift
@@ -373,6 +373,7 @@ func messageText(
                     attrs[linkAttrKey] = NSURL(string: "tel:" + t.replacingOccurrences(of: " ", with: ""))
                     handleTaps = true
                 }
+            case .unknown: ()
             case .none: ()
             }
             res.append(NSAttributedString(string: t, attributes: attrs))
diff --git a/apps/ios/SimpleXChat/ChatTypes.swift b/apps/ios/SimpleXChat/ChatTypes.swift
index faf7963192..db370efdc1 100644
--- a/apps/ios/SimpleXChat/ChatTypes.swift
+++ b/apps/ios/SimpleXChat/ChatTypes.swift
@@ -4449,6 +4449,7 @@ public enum Format: Decodable, Equatable, Hashable {
     case mention(memberName: String)
     case email
     case phone
+    case unknown
 
     public var isSimplexLink: Bool {
         get {
diff --git a/apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/model/ChatModel.kt b/apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/model/ChatModel.kt
index 365f85cfbc..d61e44f528 100644
--- a/apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/model/ChatModel.kt
+++ b/apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/model/ChatModel.kt
@@ -4352,6 +4352,7 @@ sealed class Format {
   @Serializable @SerialName("mention") class Mention(val memberName: String): Format()
   @Serializable @SerialName("email") class Email: Format()
   @Serializable @SerialName("phone") class Phone: Format()
+  @Serializable @SerialName("unknown") class Unknown: Format()
 
   val style: SpanStyle @Composable get() = when (this) {
     is Bold -> SpanStyle(fontWeight = FontWeight.Bold)
@@ -4365,6 +4366,7 @@ sealed class Format {
     is Mention -> SpanStyle(fontWeight = FontWeight.Medium)
     is Email -> linkStyle
     is Phone -> linkStyle
+    is Unknown -> SpanStyle()
   }
 
   val isSimplexLink = this is SimplexLink
diff --git a/bots/src/API/Docs/Types.hs b/bots/src/API/Docs/Types.hs
index de1c664c24..fd8529ff52 100644
--- a/bots/src/API/Docs/Types.hs
+++ b/bots/src/API/Docs/Types.hs
@@ -255,7 +255,7 @@ chatTypesDocsData =
     (sti @FileProtocol, (STEnum' $ consLower "FP"), "", [], "", ""),
     (sti @FileStatus, STEnum, "FS", [], "", ""),
     (sti @FileTransferMeta, STRecord, "", [], "", ""),
-    (sti @Format, STUnion, "", [], "", ""),
+    (sti @Format, STUnion, "", ["Unknown"], "", ""),
     (sti @FormattedText, STRecord, "", [], "", ""),
     (sti @FullGroupPreferences, STRecord, "", [], "", ""),
     (sti @FullPreferences, STRecord, "", [], "", ""),
diff --git a/bots/src/API/TypeInfo.hs b/bots/src/API/TypeInfo.hs
index 90f9cdb186..d8efd21742 100644
--- a/bots/src/API/TypeInfo.hs
+++ b/bots/src/API/TypeInfo.hs
@@ -170,6 +170,7 @@ toTypeInfo tr =
       "FormatColor" -> ST "Color" []
       "CustomData" -> ST "JSONObject" []
       "KeyMap" -> ST "JSONObject" []
+      "Value" -> ST "JSONObject" []
       "CIQDirection" -> ST "CIDirection" []
       "SendRef" -> ST "ChatRef" []
       t
diff --git a/src/Simplex/Chat/Markdown.hs b/src/Simplex/Chat/Markdown.hs
index 79365c8243..f368631852 100644
--- a/src/Simplex/Chat/Markdown.hs
+++ b/src/Simplex/Chat/Markdown.hs
@@ -53,6 +53,7 @@ data Format
   | Mention {memberName :: Text}
   | Email
   | Phone
+  | Unknown {json :: J.Value}
   deriving (Eq, Show)
 
 mentionedNames :: MarkdownList -> [Text]
@@ -305,6 +306,7 @@ markdownText (FormattedText f_ t) = case f_ of
     Mention _ -> t
     Email -> t
     Phone -> t
+    Unknown _ -> t
     where
       around c = c `T.cons` t `T.snoc` c
       color c = case colorStr c of
@@ -340,7 +342,10 @@ viewName s = if T.any isSpace s || maybe False (isPunctuation . snd) (T.unsnoc s
 
 $(JQ.deriveJSON (enumJSON $ dropPrefix "XL") ''SimplexLinkType)
 
-$(JQ.deriveJSON (sumTypeJSON fstToLower) ''Format)
+$(JQ.deriveToJSON (sumTypeJSON fstToLower) ''Format)
+
+instance FromJSON Format where
+  parseJSON v = $(JQ.mkParseJSON (sumTypeJSON fstToLower) ''Format) v <|> pure (Unknown v)
 
 $(JQ.deriveJSON defaultJSON ''FormattedText)