diff --git a/example/pubspec.lock b/example/pubspec.lock
index 1c1cd64..9b3c827 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -5,63 +5,72 @@ packages:
     dependency: transitive
     description:
       name: async
-      url: "https://pub.dartlang.org"
+      sha256: bfe67ef28df125b7dddcea62755991f807aa39a2492a23e1550161692950bbe0
+      url: "https://pub.dev"
     source: hosted
-    version: "2.9.0"
+    version: "2.10.0"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
-      url: "https://pub.dartlang.org"
+      sha256: "6cfb5af12253eaf2b368f07bacc5a80d1301a071c73360d746b7f2e32d762c66"
+      url: "https://pub.dev"
     source: hosted
-    version: "2.1.0"
+    version: "2.1.1"
   characters:
     dependency: transitive
     description:
       name: characters
-      url: "https://pub.dartlang.org"
+      sha256: e6a326c8af69605aec75ed6c187d06b349707a27fbff8222ca9cc2cff167975c
+      url: "https://pub.dev"
     source: hosted
     version: "1.2.1"
   clock:
     dependency: transitive
     description:
       name: clock
-      url: "https://pub.dartlang.org"
+      sha256: cb6d7f03e1de671e34607e909a7213e31d7752be4fb66a86d29fe1eb14bfb5cf
+      url: "https://pub.dev"
     source: hosted
     version: "1.1.1"
   collection:
     dependency: transitive
     description:
       name: collection
-      url: "https://pub.dartlang.org"
+      sha256: cfc915e6923fe5ce6e153b0723c753045de46de1b4d63771530504004a45fae0
+      url: "https://pub.dev"
     source: hosted
-    version: "1.16.0"
+    version: "1.17.0"
   cupertino_icons:
     dependency: "direct main"
     description:
       name: cupertino_icons
-      url: "https://pub.dartlang.org"
+      sha256: e35129dc44c9118cee2a5603506d823bab99c68393879edb440e0090d07586be
+      url: "https://pub.dev"
     source: hosted
     version: "1.0.5"
   fake_async:
     dependency: transitive
     description:
       name: fake_async
-      url: "https://pub.dartlang.org"
+      sha256: "511392330127add0b769b75a987850d136345d9227c6b94c96a04cf4a391bf78"
+      url: "https://pub.dev"
     source: hosted
     version: "1.3.1"
   ffi:
     dependency: transitive
     description:
       name: ffi
-      url: "https://pub.dartlang.org"
+      sha256: a38574032c5f1dd06c4aee541789906c12ccaab8ba01446e800d9c5b79c4a978
+      url: "https://pub.dev"
     source: hosted
     version: "2.0.1"
   file:
     dependency: transitive
     description:
       name: file
-      url: "https://pub.dartlang.org"
+      sha256: "1b92bec4fc2a72f59a8e15af5f52cd441e4a7860b49499d69dfa817af20e925d"
+      url: "https://pub.dev"
     source: hosted
     version: "6.1.4"
   flutter:
@@ -73,7 +82,8 @@ packages:
     dependency: "direct dev"
     description:
       name: flutter_lints
-      url: "https://pub.dartlang.org"
+      sha256: aeb0b80a8b3709709c9cc496cdc027c5b3216796bc0af0ce1007eaf24464fd4c
+      url: "https://pub.dev"
     source: hosted
     version: "2.0.1"
   flutter_test:
@@ -90,84 +100,96 @@ packages:
     dependency: transitive
     description:
       name: js
-      url: "https://pub.dartlang.org"
+      sha256: "5528c2f391ededb7775ec1daa69e65a2d61276f7552de2b5f7b8d34ee9fd4ab7"
+      url: "https://pub.dev"
     source: hosted
-    version: "0.6.4"
+    version: "0.6.5"
   lints:
     dependency: transitive
     description:
       name: lints
-      url: "https://pub.dartlang.org"
+      sha256: "5cfd6509652ff5e7fe149b6df4859e687fca9048437857cb2e65c8d780f396e3"
+      url: "https://pub.dev"
     source: hosted
     version: "2.0.0"
   matcher:
     dependency: transitive
     description:
       name: matcher
-      url: "https://pub.dartlang.org"
+      sha256: "16db949ceee371e9b99d22f88fa3a73c4e59fd0afed0bd25fc336eb76c198b72"
+      url: "https://pub.dev"
     source: hosted
-    version: "0.12.12"
+    version: "0.12.13"
   material_color_utilities:
     dependency: transitive
     description:
       name: material_color_utilities
-      url: "https://pub.dartlang.org"
+      sha256: d92141dc6fe1dad30722f9aa826c7fbc896d021d792f80678280601aff8cf724
+      url: "https://pub.dev"
     source: hosted
-    version: "0.1.5"
+    version: "0.2.0"
   meta:
     dependency: transitive
     description:
       name: meta
-      url: "https://pub.dartlang.org"
+      sha256: "6c268b42ed578a53088d834796959e4a1814b5e9e164f147f580a386e5decf42"
+      url: "https://pub.dev"
     source: hosted
     version: "1.8.0"
   path:
     dependency: transitive
     description:
       name: path
-      url: "https://pub.dartlang.org"
+      sha256: db9d4f58c908a4ba5953fcee2ae317c94889433e5024c27ce74a37f94267945b
+      url: "https://pub.dev"
     source: hosted
     version: "1.8.2"
   path_provider_linux:
     dependency: transitive
     description:
       name: path_provider_linux
-      url: "https://pub.dartlang.org"
+      sha256: ab0987bf95bc591da42dffb38c77398fc43309f0b9b894dcc5d6f40c4b26c379
+      url: "https://pub.dev"
     source: hosted
     version: "2.1.7"
   path_provider_platform_interface:
     dependency: transitive
     description:
       name: path_provider_platform_interface
-      url: "https://pub.dartlang.org"
+      sha256: "27dc7a224fcd07444cb5e0e60423ccacea3e13cf00fc5282ac2c918132da931d"
+      url: "https://pub.dev"
     source: hosted
     version: "2.0.4"
   path_provider_windows:
     dependency: transitive
     description:
       name: path_provider_windows
-      url: "https://pub.dartlang.org"
+      sha256: bcabbe399d4042b8ee687e17548d5d3f527255253b4a639f5f8d2094a9c2b45c
+      url: "https://pub.dev"
     source: hosted
     version: "2.1.3"
   platform:
     dependency: transitive
     description:
       name: platform
-      url: "https://pub.dartlang.org"
+      sha256: "4a451831508d7d6ca779f7ac6e212b4023dd5a7d08a27a63da33756410e32b76"
+      url: "https://pub.dev"
     source: hosted
     version: "3.1.0"
   plugin_platform_interface:
     dependency: transitive
     description:
       name: plugin_platform_interface
-      url: "https://pub.dartlang.org"
+      sha256: dbf0f707c78beedc9200146ad3cb0ab4d5da13c246336987be6940f026500d3a
+      url: "https://pub.dev"
     source: hosted
     version: "2.1.3"
   process:
     dependency: transitive
     description:
       name: process
-      url: "https://pub.dartlang.org"
+      sha256: "53fd8db9cec1d37b0574e12f07520d582019cb6c44abf5479a01505099a34a09"
+      url: "https://pub.dev"
     source: hosted
     version: "4.2.4"
   pusher_channels_flutter:
@@ -176,61 +198,69 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "2.0.2"
+    version: "2.1.2"
   shared_preferences:
     dependency: "direct main"
     description:
       name: shared_preferences
-      url: "https://pub.dartlang.org"
+      sha256: "76917b7d4b9526b2ba416808a7eb9fb2863c1a09cf63ec85f1453da240fa818a"
+      url: "https://pub.dev"
     source: hosted
     version: "2.0.15"
   shared_preferences_android:
     dependency: transitive
     description:
       name: shared_preferences_android
-      url: "https://pub.dartlang.org"
+      sha256: "3e128864b9cff21bdd5b3ad569953070a851d62901bee880bb052b1110b38007"
+      url: "https://pub.dev"
     source: hosted
     version: "2.0.13"
   shared_preferences_ios:
     dependency: transitive
     description:
       name: shared_preferences_ios
-      url: "https://pub.dartlang.org"
+      sha256: "585a14cefec7da8c9c2fb8cd283a3bb726b4155c0952afe6a0caaa7b2272de34"
+      url: "https://pub.dev"
     source: hosted
     version: "2.1.1"
   shared_preferences_linux:
     dependency: transitive
     description:
       name: shared_preferences_linux
-      url: "https://pub.dartlang.org"
+      sha256: "28aefc1261746e7bad3d09799496054beb84e8c4ffcdfed7734e17b4ada459a5"
+      url: "https://pub.dev"
     source: hosted
     version: "2.1.1"
   shared_preferences_macos:
     dependency: transitive
     description:
       name: shared_preferences_macos
-      url: "https://pub.dartlang.org"
+      sha256: fbb94bf296576f49be37a1496d5951796211a8db0aa22cc0d68c46440dad808c
+      url: "https://pub.dev"
     source: hosted
     version: "2.0.4"
   shared_preferences_platform_interface:
     dependency: transitive
     description:
       name: shared_preferences_platform_interface
-      url: "https://pub.dartlang.org"
+      sha256: da9431745ede5ece47bc26d5d73a9d3c6936ef6945c101a5aca46f62e52c1cf3
+      url: "https://pub.dev"
     source: hosted
     version: "2.1.0"
   shared_preferences_web:
     dependency: transitive
     description:
       name: shared_preferences_web
-      url: "https://pub.dartlang.org"
+      sha256: a4b5bc37fe1b368bbc81f953197d55e12f49d0296e7e412dfe2d2d77d6929958
+      url: "https://pub.dev"
     source: hosted
     version: "2.0.4"
   shared_preferences_windows:
     dependency: transitive
     description:
       name: shared_preferences_windows
-      url: "https://pub.dartlang.org"
+      sha256: "97f7ab9a7da96d9cf19581f5de520ceb529548498bd6b5e0ccd02d68a0d15eba"
+      url: "https://pub.dev"
     source: hosted
     version: "2.1.1"
   sky_engine:
@@ -242,65 +272,74 @@ packages:
     dependency: transitive
     description:
       name: source_span
-      url: "https://pub.dartlang.org"
+      sha256: dd904f795d4b4f3b870833847c461801f6750a9fa8e61ea5ac53f9422b31f250
+      url: "https://pub.dev"
     source: hosted
-    version: "1.9.0"
+    version: "1.9.1"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
-      url: "https://pub.dartlang.org"
+      sha256: c3c7d8edb15bee7f0f74debd4b9c5f3c2ea86766fe4178eb2a18eb30a0bdaed5
+      url: "https://pub.dev"
     source: hosted
-    version: "1.10.0"
+    version: "1.11.0"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
-      url: "https://pub.dartlang.org"
+      sha256: "83615bee9045c1d322bbbd1ba209b7a749c2cbcdcb3fdd1df8eb488b3279c1c8"
+      url: "https://pub.dev"
     source: hosted
-    version: "2.1.0"
+    version: "2.1.1"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
-      url: "https://pub.dartlang.org"
+      sha256: "556692adab6cfa87322a115640c11f13cb77b3f076ddcc5d6ae3c20242bedcde"
+      url: "https://pub.dev"
     source: hosted
-    version: "1.1.1"
+    version: "1.2.0"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
-      url: "https://pub.dartlang.org"
+      sha256: a29248a84fbb7c79282b40b8c72a1209db169a2e0542bce341da992fe1bc7e84
+      url: "https://pub.dev"
     source: hosted
     version: "1.2.1"
   test_api:
     dependency: transitive
     description:
       name: test_api
-      url: "https://pub.dartlang.org"
+      sha256: ad540f65f92caa91bf21dfc8ffb8c589d6e4dc0c2267818b4cc2792857706206
+      url: "https://pub.dev"
     source: hosted
-    version: "0.4.12"
+    version: "0.4.16"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
-      url: "https://pub.dartlang.org"
+      sha256: "80b3257d1492ce4d091729e3a67a60407d227c27241d6927be0130c98e741803"
+      url: "https://pub.dev"
     source: hosted
-    version: "2.1.2"
+    version: "2.1.4"
   win32:
     dependency: transitive
     description:
       name: win32
-      url: "https://pub.dartlang.org"
+      sha256: "1952a663c0e34fbde55916010d54bbb249bf5f2583113c497602f0ee01c6faa4"
+      url: "https://pub.dev"
     source: hosted
     version: "3.0.0"
   xdg_directories:
     dependency: transitive
     description:
       name: xdg_directories
-      url: "https://pub.dartlang.org"
+      sha256: "11541eedefbcaec9de35aa82650b695297ce668662bbd6e3911a7fabdbde589f"
+      url: "https://pub.dev"
     source: hosted
     version: "0.2.0+2"
 sdks:
-  dart: ">=2.17.0 <3.0.0"
+  dart: ">=2.18.0 <3.0.0"
   flutter: ">=3.0.0"
diff --git a/lib/pusher_channels_flutter.dart b/lib/pusher_channels_flutter.dart
index d01bd9f..49e1626 100644
--- a/lib/pusher_channels_flutter.dart
+++ b/lib/pusher_channels_flutter.dart
@@ -237,13 +237,13 @@ class PusherChannelsFlutter {
 
   Future<PusherChannel> subscribe(
       {required String channelName,
-      var onSubscriptionSucceeded,
+      dynamic Function(dynamic value)? onSubscriptionSucceeded,
       var onSubscriptionError,
-      var onMemberAdded,
-      var onMemberRemoved,
-      var onEvent,
-      var onSubscriptionCount}) async {
-    var channel = PusherChannel(
+      dynamic Function(PusherMember member)? onMemberAdded,
+      dynamic Function(PusherMember member)? onMemberRemoved,
+      dynamic Function(dynamic event)? onEvent,
+      dynamic Function(int subscriptionCount)? onSubscriptionCount}) async {
+    PusherChannel channel = PusherChannel(
         channelName: channelName,
         onSubscriptionSucceeded: onSubscriptionSucceeded,
         onMemberAdded: onMemberAdded,
diff --git a/pubspec.lock b/pubspec.lock
index 918da74..b8b55d4 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -5,42 +5,48 @@ packages:
     dependency: transitive
     description:
       name: async
-      url: "https://pub.dartlang.org"
+      sha256: bfe67ef28df125b7dddcea62755991f807aa39a2492a23e1550161692950bbe0
+      url: "https://pub.dev"
     source: hosted
-    version: "2.9.0"
+    version: "2.10.0"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
-      url: "https://pub.dartlang.org"
+      sha256: "6cfb5af12253eaf2b368f07bacc5a80d1301a071c73360d746b7f2e32d762c66"
+      url: "https://pub.dev"
     source: hosted
-    version: "2.1.0"
+    version: "2.1.1"
   characters:
     dependency: transitive
     description:
       name: characters
-      url: "https://pub.dartlang.org"
+      sha256: e6a326c8af69605aec75ed6c187d06b349707a27fbff8222ca9cc2cff167975c
+      url: "https://pub.dev"
     source: hosted
     version: "1.2.1"
   clock:
     dependency: transitive
     description:
       name: clock
-      url: "https://pub.dartlang.org"
+      sha256: cb6d7f03e1de671e34607e909a7213e31d7752be4fb66a86d29fe1eb14bfb5cf
+      url: "https://pub.dev"
     source: hosted
     version: "1.1.1"
   collection:
     dependency: transitive
     description:
       name: collection
-      url: "https://pub.dartlang.org"
+      sha256: cfc915e6923fe5ce6e153b0723c753045de46de1b4d63771530504004a45fae0
+      url: "https://pub.dev"
     source: hosted
-    version: "1.16.0"
+    version: "1.17.0"
   fake_async:
     dependency: transitive
     description:
       name: fake_async
-      url: "https://pub.dartlang.org"
+      sha256: "511392330127add0b769b75a987850d136345d9227c6b94c96a04cf4a391bf78"
+      url: "https://pub.dev"
     source: hosted
     version: "1.3.1"
   flutter:
@@ -52,7 +58,8 @@ packages:
     dependency: "direct dev"
     description:
       name: flutter_lints
-      url: "https://pub.dartlang.org"
+      sha256: aeb0b80a8b3709709c9cc496cdc027c5b3216796bc0af0ce1007eaf24464fd4c
+      url: "https://pub.dev"
     source: hosted
     version: "2.0.1"
   flutter_test:
@@ -69,42 +76,48 @@ packages:
     dependency: "direct main"
     description:
       name: js
-      url: "https://pub.dartlang.org"
+      sha256: "5528c2f391ededb7775ec1daa69e65a2d61276f7552de2b5f7b8d34ee9fd4ab7"
+      url: "https://pub.dev"
     source: hosted
-    version: "0.6.4"
+    version: "0.6.5"
   lints:
     dependency: transitive
     description:
       name: lints
-      url: "https://pub.dartlang.org"
+      sha256: "5e4a9cd06d447758280a8ac2405101e0e2094d2a1dbdd3756aec3fe7775ba593"
+      url: "https://pub.dev"
     source: hosted
     version: "2.0.1"
   matcher:
     dependency: transitive
     description:
       name: matcher
-      url: "https://pub.dartlang.org"
+      sha256: "16db949ceee371e9b99d22f88fa3a73c4e59fd0afed0bd25fc336eb76c198b72"
+      url: "https://pub.dev"
     source: hosted
-    version: "0.12.12"
+    version: "0.12.13"
   material_color_utilities:
     dependency: transitive
     description:
       name: material_color_utilities
-      url: "https://pub.dartlang.org"
+      sha256: d92141dc6fe1dad30722f9aa826c7fbc896d021d792f80678280601aff8cf724
+      url: "https://pub.dev"
     source: hosted
-    version: "0.1.5"
+    version: "0.2.0"
   meta:
     dependency: transitive
     description:
       name: meta
-      url: "https://pub.dartlang.org"
+      sha256: "6c268b42ed578a53088d834796959e4a1814b5e9e164f147f580a386e5decf42"
+      url: "https://pub.dev"
     source: hosted
     version: "1.8.0"
   path:
     dependency: transitive
     description:
       name: path
-      url: "https://pub.dartlang.org"
+      sha256: db9d4f58c908a4ba5953fcee2ae317c94889433e5024c27ce74a37f94267945b
+      url: "https://pub.dev"
     source: hosted
     version: "1.8.2"
   sky_engine:
@@ -116,51 +129,58 @@ packages:
     dependency: transitive
     description:
       name: source_span
-      url: "https://pub.dartlang.org"
+      sha256: dd904f795d4b4f3b870833847c461801f6750a9fa8e61ea5ac53f9422b31f250
+      url: "https://pub.dev"
     source: hosted
-    version: "1.9.0"
+    version: "1.9.1"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
-      url: "https://pub.dartlang.org"
+      sha256: c3c7d8edb15bee7f0f74debd4b9c5f3c2ea86766fe4178eb2a18eb30a0bdaed5
+      url: "https://pub.dev"
     source: hosted
-    version: "1.10.0"
+    version: "1.11.0"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
-      url: "https://pub.dartlang.org"
+      sha256: "83615bee9045c1d322bbbd1ba209b7a749c2cbcdcb3fdd1df8eb488b3279c1c8"
+      url: "https://pub.dev"
     source: hosted
-    version: "2.1.0"
+    version: "2.1.1"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
-      url: "https://pub.dartlang.org"
+      sha256: "556692adab6cfa87322a115640c11f13cb77b3f076ddcc5d6ae3c20242bedcde"
+      url: "https://pub.dev"
     source: hosted
-    version: "1.1.1"
+    version: "1.2.0"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
-      url: "https://pub.dartlang.org"
+      sha256: a29248a84fbb7c79282b40b8c72a1209db169a2e0542bce341da992fe1bc7e84
+      url: "https://pub.dev"
     source: hosted
     version: "1.2.1"
   test_api:
     dependency: transitive
     description:
       name: test_api
-      url: "https://pub.dartlang.org"
+      sha256: ad540f65f92caa91bf21dfc8ffb8c589d6e4dc0c2267818b4cc2792857706206
+      url: "https://pub.dev"
     source: hosted
-    version: "0.4.12"
+    version: "0.4.16"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
-      url: "https://pub.dartlang.org"
+      sha256: "80b3257d1492ce4d091729e3a67a60407d227c27241d6927be0130c98e741803"
+      url: "https://pub.dev"
     source: hosted
-    version: "2.1.2"
+    version: "2.1.4"
 sdks:
-  dart: ">=2.17.0 <3.0.0"
+  dart: ">=2.18.0 <3.0.0"
   flutter: ">=1.20.0"