diff --git a/nsmb.conf b/nsmb.conf
index 8d79c29..fce0813 100644
--- a/nsmb.conf
+++ b/nsmb.conf
@@ -1,8 +1,13 @@
-# /etc/nsmb.conf - macOS 10.13 - 2018-05-20
+# /etc/nsmb.conf - macOS 11.2 - 2021-04-17
 #------------------------------------------------------------------------------
-# More information:
+# SMB configuration for macOS 11.2 <-> Synology
+#------------------------------------------------------------------------------
+# Additional information:
+# -----------------------
+# https://support.apple.com/de-de/HT211927
 # https://support.apple.com/en-us/HT208209
 # https://apple.stackexchange.com/questions/309016/smb-share-deadlocks-since-high-sierra
+# https://photographylife.com/afp-vs-nfs-vs-smb-performance
 #------------------------------------------------------------------------------
 [default]
 
@@ -22,7 +27,7 @@ dir_cache_off=yes
 # 7 == 0111  SMB 1/2/3 should be enabled
 # 6 == 0110  SMB 2/3 should be enabled
 # 4 == 0100  SMB 3 should be enabled
-protocol_vers_map=4
+protocol_vers_map=6
 
 # Turn off notifications
 notify_off=yes
\ No newline at end of file