diff --git a/Cargo.toml b/Cargo.toml
index 1b0122e..90015c8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "slack-morphism"
-version = "2.1.1-alpha.0"
+version = "2.2.0-alpha.0"
 authors = ["Abdulla Abdurakhmanov <me@abdolence.dev>"]
 edition = "2021"
 license = "Apache-2.0"
diff --git a/src/models/events/push.rs b/src/models/events/push.rs
index 8f0b17c..c68bd83 100644
--- a/src/models/events/push.rs
+++ b/src/models/events/push.rs
@@ -205,8 +205,8 @@ pub struct SlackLinkSharedEvent {
     pub is_bot_user_member: bool,
     pub links: Vec<SlackLinkObject>,
     pub message_ts: SlackTs,
-    pub source: String,
-    pub unfurl_id: SlackUnfurlId,
+    pub source: Option<String>,
+    pub unfurl_id: Option<SlackUnfurlId>,
     pub user: SlackUserId,
 }