diff --git a/CHANGELOG.md b/CHANGELOG.md
index a59201f7..8cb92447 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+**v0.51.0**
+* [[TeamMsgExtractor #401](https://github.com/TeamMsgExtractor/msg-extractor/issues/401)] Add support for MSG class type "IPM.SkypeTeams.Message".
+
 **v0.50.1**
 * [[TeamMsgExtractor #434](https://github.com/TeamMsgExtractor/msg-extractor/issues/434)] Fix bug introduced in previous version.
 
diff --git a/extract_msg/open_msg.py b/extract_msg/open_msg.py
index f2c949e4..ab8b35a9 100644
--- a/extract_msg/open_msg.py
+++ b/extract_msg/open_msg.py
@@ -116,7 +116,7 @@ def openMsg(path, **kwargs) -> MSGFile:
             return msg
     classType = ct.lower()
     # Put the message class first as it is most common.
-    if classType.startswith('ipm.note') or classType.startswith('report'):
+    if classType.startswith('ipm.note') or classType.startswith('report') or classType.startswith('ipm.skypeteams.message'):
         msg.close()
         if classType.endswith('smime.multipartsigned') or classType.endswith('smime'):
             return MessageSigned(path, **kwargs)