diff --git a/CHANGELOG.md b/CHANGELOG.md
index a65988991..de798792b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,10 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
+## [1.0.1] - 2019-07-14
+### Security
+- OStatus: fix an object spoofing vulnerability.
+
 ## [1.0.0] - 2019-06-29
 ### Security
 - Mastodon API: Fix display names not being sanitized
diff --git a/test/web/activity_pub/transmogrifier_test.exs b/test/web/activity_pub/transmogrifier_test.exs
index 68ec03c33..5a7b1ed80 100644
--- a/test/web/activity_pub/transmogrifier_test.exs
+++ b/test/web/activity_pub/transmogrifier_test.exs
@@ -390,6 +390,7 @@ test "it ensures that as:Public activities make it to their followers collection
         |> Map.put("attributedTo", user.ap_id)
         |> Map.put("to", ["https://www.w3.org/ns/activitystreams#Public"])
         |> Map.put("cc", [])
+        |> Map.put("id", user.ap_id <> "/activities/12345678")
 
       data = Map.put(data, "object", object)
 
@@ -413,6 +414,7 @@ test "it ensures that address fields become lists" do
         |> Map.put("attributedTo", user.ap_id)
         |> Map.put("to", nil)
         |> Map.put("cc", nil)
+        |> Map.put("id", user.ap_id <> "/activities/12345678")
 
       data = Map.put(data, "object", object)