diff --git a/api_docs/construct-narrow.md b/api_docs/construct-narrow.md
index 76021d1879..c0c916ff0b 100644
--- a/api_docs/construct-narrow.md
+++ b/api_docs/construct-narrow.md
@@ -58,7 +58,7 @@ as an empty string.
 
 ## Changes
 
-* In Zulip 10.0 (feature level ZF-f80735), support was added for a new
+* In Zulip 10.0 (feature level 366), support was added for a new
   `is:muted` operator combination, matching messages in topics and
   channels that the user has [muted](/help/mute-a-topic).
 
diff --git a/api_docs/message-formatting.md b/api_docs/message-formatting.md
index e90afa7f2c..a85d56fdc7 100644
--- a/api_docs/message-formatting.md
+++ b/api_docs/message-formatting.md
@@ -113,7 +113,7 @@ In Zulip 10.0 (feature level 319), added Markdown syntax
 for linking to a specific message in a conversation. Declared the
 `data-stream-id` field to be deprecated as detailed above.
 
-In Zulip 11.0 (feature level ZF-93627a), clients can decide what
+In Zulip 11.0 (feature level 383), clients can decide what
 channel view a.stream channel link elements take you to -- i.e.,
 the href for those is the default behavior of the link that also
 encodes the channel alongside the data-stream-id field, but clients