diff --git a/fhem/contrib/AutomowerConnect/98_AMConnectTools.pm b/fhem/contrib/AutomowerConnect/98_AMConnectTools.pm
index 645932051..31f63b3af 100644
--- a/fhem/contrib/AutomowerConnect/98_AMConnectTools.pm
+++ b/fhem/contrib/AutomowerConnect/98_AMConnectTools.pm
@@ -161,7 +161,6 @@ sub Define{
     my $paw = join( ' ', devspec2array( "TYPE=AutomowerConnect" ) );
     readingsSingleUpdate( $hash, '.associatedWith', $paw, 0 );
 
-
   }
 
   return undef;
@@ -214,6 +213,16 @@ sub Notify {
 
     } elsif ( $dev_name eq 'global' && $event =~ /^(INITIALIZED|MODIFIED $name|ATTR $name disable 0|DELETEATTR $name disable)$/ ) {
 
+      foreach my $keyx ( devspec2array('TYPE=AutomowerConnect') ) {
+
+        if ( !defined( $defs{$keyx}->{VERSION_AMConnectTools} ) || defined( $defs{$keyx}->{VERSION_AMConnectTools} ) && $defs{$keyx}->{VERSION_AMConnectTools} ne $defs{AMConnectTools}->{VERSION} ) {
+
+          $defs{$keyx}->{VERSION_AMConnectTools} = $defs{AMConnectTools}->{VERSION}
+
+        }
+
+      }
+
       my $runningDevices = '';
       my @mowers = devspec2array( AttrVal( $name, 'notifiedByMowerDevices', '' ) );
 
@@ -641,6 +650,12 @@ sub Delete {
   my $iam ="$type $name Delete: ";
   Log3( $name, 5, "$iam called" );
 
+  foreach my $keyx ( devspec2array('TYPE=AutomowerConnect') ) {
+
+    delete( $defs{$keyx}->{VERSION_AMConnectTools} ) if ( defined( $defs{$keyx}->{VERSION_AMConnectTools} ) );
+
+  }
+
   my ($passResp,$passErr) = $hash->{helper}->{passObj}->setDeletePassword($name);
   Log3( $name, 1, "$iam error: $passErr" ) if ($passErr);