diff --git a/Feature-Matrix.md b/Feature-Matrix.md
index 2936e8f..1712806 100644
--- a/Feature-Matrix.md
+++ b/Feature-Matrix.md
@@ -16,6 +16,7 @@
 | >    getGroupIds                    | ❌ | ❌ | ✅
 | >    getGroupMembers                | ❌ | ❌ | ✅
 | >    getGroupName                   | ❌ | ❌ | ✅
+| >    isGroupBlocked                 | ❌ | ❌ | ✅
 | listIdentities                      | ✅ | ❌ | ✅<sup>1, 16</sup>
 | >    listIdentity                   | ✅<sup>17</sup> | ❌ | ✅<sup>1</sup>
 | quitGroup                           | ✅ | ❌ | ✅
@@ -93,7 +94,6 @@
 | getSender                          | ✅ | ✅ | ✅
 | getSource                          | ✅ | ✅ | ✅
 | getTimestamp                       | ✅ | ✅ | ✅
-| isGroupBlocked                     | ✅ | ✅ | ✅
 | isMember                           | ✅ | ✅ | ✅
 | isRegistered                       | ✅ | ✅ | ✅
 
@@ -163,4 +163,4 @@
 16. Provided indirectly by the `listNumbers` command, which returns an array of contact numbers, followed by a series of calls to  `listIdentity`, which returns a four-element array
 17. Provided via the `--number` option
 18. Uses `org.asamk.SignalControl` rather than `org.asamk.Signal` 
-19. Provided indirectly by `getGroupIds` and a series of calls to `getGroupMembers` and `getGroupName`                   
+19. Provided indirectly by `getGroupIds` and a series of calls to `getGroupMembers`, `getGroupName` and `isGroupBlocked`