diff --git a/META6.json b/META6.json
index a938977..f249d3f 100644
--- a/META6.json
+++ b/META6.json
@@ -12,7 +12,8 @@
     "Digest::SHA1::Native",
     "Crypt::Random",
     "JSON::Fast",
-    "OO::Monitors"
+    "OO::Monitors",
+    "Log::Timeline"
   ],
   "provides": {
     "Cro::HTTP::Router::WebSocket": "lib/Cro/HTTP/Router/WebSocket.pm6",
@@ -25,6 +26,7 @@
     "Cro::WebSocket::FrameSerializer": "lib/Cro/WebSocket/FrameSerializer.pm6",
     "Cro::WebSocket::Handler": "lib/Cro/WebSocket/Handler.pm6",
     "Cro::WebSocket::Internal": "lib/Cro/WebSocket/Internal.pm6",
+    "Cro::WebSocket::LogTimelineSchema": "lib/Cro/WebSocket/LogTimelineSchema.pm6",
     "Cro::WebSocket::Message": "lib/Cro/WebSocket/Message.pm6",
     "Cro::WebSocket::Message::Opcode": "lib/Cro/WebSocket/Message/Opcode.pm6",
     "Cro::WebSocket::MessageParser": "lib/Cro/WebSocket/MessageParser.pm6",
diff --git a/lib/Cro/WebSocket/Client.pm6 b/lib/Cro/WebSocket/Client.pm6
index 60cf54c..304534b 100644
--- a/lib/Cro/WebSocket/Client.pm6
+++ b/lib/Cro/WebSocket/Client.pm6
@@ -7,6 +7,7 @@ use Cro::WebSocket::BodySerializers;
 use Cro::WebSocket::Client::Connection;
 use Crypt::Random;
 use Digest::SHA1::Native;
+use Cro::WebSocket::LogTimelineSchema;
 
 class X::Cro::WebSocket::Client::CannotUpgrade is Exception {
     has $.reason;
@@ -102,6 +103,7 @@ class Cro::WebSocket::Client {
                 # No extensions for now
                 # die unless $resp.header('Sec-WebSocket-Extensions') eq Nil;
                 # die unless $resp.header('Sec-WebSocket-Protocol') eq 'echo-protocol'; # XXX
+                Cro::WebSocket::LogTimelineSchema::Connected.log();
                 Cro::WebSocket::Client::Connection.new(
                     in => $resp.body-byte-stream, :$out,
                     |(%(:$!body-parsers, :$!body-serializers) with self)
diff --git a/lib/Cro/WebSocket/Client/Connection.pm6 b/lib/Cro/WebSocket/Client/Connection.pm6
index 78f1b3f..a729233 100644
--- a/lib/Cro/WebSocket/Client/Connection.pm6
+++ b/lib/Cro/WebSocket/Client/Connection.pm6
@@ -6,6 +6,7 @@ use Cro::WebSocket::Internal;
 use Cro::WebSocket::Message;
 use Cro::WebSocket::MessageParser;
 use Cro::WebSocket::MessageSerializer;
+use Cro::WebSocket::LogTimelineSchema;
 use OO::Monitors;
 
 class X::Cro::WebSocket::Client::Closed is Exception {
@@ -123,7 +124,9 @@ class Cro::WebSocket::Client::Connection {
     multi method send(Cro::WebSocket::Message $m --> Nil) {
         self!ensure-open('send');
         my $serialized = $m.serialization-outcome //= Promise.new;
-        $!sender.emit($m);
+        Cro::WebSocket::LogTimelineSchema::Sent.log: -> {
+            $!sender.emit($m);
+        }
         await $serialized;
     }
     multi method send($m) {
diff --git a/lib/Cro/WebSocket/FrameSerializer.pm6 b/lib/Cro/WebSocket/FrameSerializer.pm6
index d8cb358..99902fa 100644
--- a/lib/Cro/WebSocket/FrameSerializer.pm6
+++ b/lib/Cro/WebSocket/FrameSerializer.pm6
@@ -19,7 +19,6 @@ class Cro::WebSocket::FrameSerializer does Cro::Transform {
 
                 # Mask flag and payload length
                 my $payload-len = $frame.payload.elems;
-                my $pos;
                 if $payload-len < 126 {
                     $message[1] = ($!mask ?? 128 !! 0) + $payload-len;
                 }
diff --git a/lib/Cro/WebSocket/Handler.pm6 b/lib/Cro/WebSocket/Handler.pm6
index f1ce57e..bc1ff08 100644
--- a/lib/Cro/WebSocket/Handler.pm6
+++ b/lib/Cro/WebSocket/Handler.pm6
@@ -1,5 +1,6 @@
 use Cro::Transform;
 use Cro::WebSocket::Message;
+use Cro::WebSocket::LogTimelineSchema;
 
 class Cro::WebSocket::Handler does Cro::Transform {
     has &.block;
@@ -65,7 +66,9 @@ class Cro::WebSocket::Handler does Cro::Transform {
 
             whenever $block-result {
                 when Cro::WebSocket::Message {
-                    emit $_;
+                    Cro::WebSocket::LogTimelineSchema::Sent.log: -> {
+                        emit $_
+                    }
                     if .opcode == Cro::WebSocket::Message::Close {
                         $supplier.emit(CloseMessage);
                         $end = True;
@@ -73,7 +76,9 @@ class Cro::WebSocket::Handler does Cro::Transform {
                     }
                 }
                 default {
-                    emit Cro::WebSocket::Message.new($_)
+                    Cro::WebSocket::LogTimelineSchema::Sent.log: -> {
+                        emit Cro::WebSocket::Message.new($_)
+                    }
                 }
 
                 LAST {
diff --git a/lib/Cro/WebSocket/LogTimelineSchema.pm6 b/lib/Cro/WebSocket/LogTimelineSchema.pm6
new file mode 100644
index 0000000..bba7184
--- /dev/null
+++ b/lib/Cro/WebSocket/LogTimelineSchema.pm6
@@ -0,0 +1,10 @@
+unit module Cro::WebSocket::LogTimelineSchema;
+
+use Log::Timeline;
+
+class Connected does Log::Timeline::Event['Cro::WebSocket', 'Client', 'Connected'] is export { }
+
+class Sent does Log::Timeline::Task['Cro::WebSocket', 'Message', 'Sent'] is export { }
+
+class Received does Log::Timeline::Task['Cro::WebSocket', 'Message', 'Received'] is export { }
+