diff --git a/build.gradle b/build.gradle
index c7b238b3..a102011f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -43,7 +43,7 @@ tasks.register("printVersion") {
 
 subprojects {
     group 'com.github.shynixn.mccoroutine'
-    version '2.11.0'
+    version '2.12.0'
 
     sourceCompatibility = 1.8
 
diff --git a/docs/wiki/docs/installation.md b/docs/wiki/docs/installation.md
index a4aa9387..5b1556f8 100644
--- a/docs/wiki/docs/installation.md
+++ b/docs/wiki/docs/installation.md
@@ -8,8 +8,8 @@ In order to use the MCCoroutine Kotlin API, you need to include the following li
 
     ```groovy
     dependencies {
-        implementation("com.github.shynixn.mccoroutine:mccoroutine-bukkit-api:2.11.0")
-        implementation("com.github.shynixn.mccoroutine:mccoroutine-bukkit-core:2.11.0")
+        implementation("com.github.shynixn.mccoroutine:mccoroutine-bukkit-api:2.12.0")
+        implementation("com.github.shynixn.mccoroutine:mccoroutine-bukkit-core:2.12.0")
     }
     ```
 
@@ -17,8 +17,8 @@ In order to use the MCCoroutine Kotlin API, you need to include the following li
 
     ```groovy
     dependencies {
-        implementation("com.github.shynixn.mccoroutine:mccoroutine-bungeecord-api:2.11.0")
-        implementation("com.github.shynixn.mccoroutine:mccoroutine-bungeecord-core:2.11.0")
+        implementation("com.github.shynixn.mccoroutine:mccoroutine-bungeecord-api:2.12.0")
+        implementation("com.github.shynixn.mccoroutine:mccoroutine-bungeecord-core:2.12.0")
     }
     ```
 
@@ -26,8 +26,8 @@ In order to use the MCCoroutine Kotlin API, you need to include the following li
 
     ```groovy
     dependencies {
-        implementation("com.github.shynixn.mccoroutine:mccoroutine-sponge-api:2.11.0")
-        implementation("com.github.shynixn.mccoroutine:mccoroutine-sponge-core:2.11.0")
+        implementation("com.github.shynixn.mccoroutine:mccoroutine-sponge-api:2.12.0")
+        implementation("com.github.shynixn.mccoroutine:mccoroutine-sponge-core:2.12.0")
     }
     ```
 
@@ -35,8 +35,8 @@ In order to use the MCCoroutine Kotlin API, you need to include the following li
 
     ```groovy
     dependencies {
-        implementation("com.github.shynixn.mccoroutine:mccoroutine-velocity-api:2.11.0")
-        implementation("com.github.shynixn.mccoroutine:mccoroutine-velocity-core:2.11.0")
+        implementation("com.github.shynixn.mccoroutine:mccoroutine-velocity-api:2.12.0")
+        implementation("com.github.shynixn.mccoroutine:mccoroutine-velocity-core:2.12.0")
     }
     ```
 
@@ -44,8 +44,8 @@ In order to use the MCCoroutine Kotlin API, you need to include the following li
 
     ```groovy
     dependencies {
-        implementation("com.github.shynixn.mccoroutine:mccoroutine-minestom-api:2.11.0")
-        implementation("com.github.shynixn.mccoroutine:mccoroutine-minestom-core:2.11.0")
+        implementation("com.github.shynixn.mccoroutine:mccoroutine-minestom-api:2.12.0")
+        implementation("com.github.shynixn.mccoroutine:mccoroutine-minestom-core:2.12.0")
     }
     ```
 
@@ -53,8 +53,8 @@ In order to use the MCCoroutine Kotlin API, you need to include the following li
 
     ```groovy
     dependencies {
-        implementation("com.github.shynixn.mccoroutine:mccoroutine-fabric-api:2.11.0")
-        implementation("com.github.shynixn.mccoroutine:mccoroutine-fabric-core:2.11.0")
+        implementation("com.github.shynixn.mccoroutine:mccoroutine-fabric-api:2.12.0")
+        implementation("com.github.shynixn.mccoroutine:mccoroutine-fabric-core:2.12.0")
     }
     ```
 
@@ -78,8 +78,8 @@ dependencies {
     **plugin.yml**
     ```yaml
     libraries:
-      - com.github.shynixn.mccoroutine:mccoroutine-bukkit-api:2.11.0
-      - com.github.shynixn.mccoroutine:mccoroutine-bukkit-core:2.11.0
+      - com.github.shynixn.mccoroutine:mccoroutine-bukkit-api:2.12.0
+      - com.github.shynixn.mccoroutine:mccoroutine-bukkit-core:2.12.0
     ```
 
 === "Other Server"
diff --git a/docs/wiki/docs/unittests.md b/docs/wiki/docs/unittests.md
index 34502535..1a088b74 100644
--- a/docs/wiki/docs/unittests.md
+++ b/docs/wiki/docs/unittests.md
@@ -18,7 +18,7 @@ feedback to the real environment.
 
 ```kotlin
 dependencies {
-    testImplementation("com.github.shynixn.mccoroutine:mccoroutine-bukkit-test:2.11.0")
+    testImplementation("com.github.shynixn.mccoroutine:mccoroutine-bukkit-test:2.12.0")
 }
 ```
 
diff --git a/mccoroutine-bukkit-core/src/main/java/com/github/shynixn/mccoroutine/bukkit/service/EventServiceImpl.kt b/mccoroutine-bukkit-core/src/main/java/com/github/shynixn/mccoroutine/bukkit/service/EventServiceImpl.kt
index 395247d8..05db45b1 100644
--- a/mccoroutine-bukkit-core/src/main/java/com/github/shynixn/mccoroutine/bukkit/service/EventServiceImpl.kt
+++ b/mccoroutine-bukkit-core/src/main/java/com/github/shynixn/mccoroutine/bukkit/service/EventServiceImpl.kt
@@ -188,6 +188,7 @@ internal class EventServiceImpl(private val plugin: Plugin) {
         private val method: Method,
         private val plugin: Plugin
     ) : EventExecutor {
+        var isSuspendMethod: Boolean? = null
         fun executeSuspend(listener: Listener, event: Event): Job {
             return executeEvent(listener, event)
         }
@@ -210,11 +211,19 @@ internal class EventServiceImpl(private val plugin: Plugin) {
                     // We want to start it on the same thread as the calling thread -> unDispatched.
                     // However, after a possible suspension we either end up on the asyncDispatcher or minecraft Dispatcher.
                     return plugin.launch(dispatcher, CoroutineStart.UNDISPATCHED) {
-                        try {
-                            // Try as suspension function.
+                        if (isSuspendMethod == null) {
+                            try {
+                                // Try as suspension function.
+                                method.invokeSuspend(listener, event)
+                                isSuspendMethod = true
+                            } catch (e: IllegalArgumentException) {
+                                // Try as ordinary function.
+                                method.invoke(listener, event)
+                                isSuspendMethod = false
+                            }
+                        } else if (isSuspendMethod!!) {
                             method.invokeSuspend(listener, event)
-                        } catch (e: IllegalArgumentException) {
-                            // Try as ordinary function.
+                        } else {
                             method.invoke(listener, event)
                         }
                     }
diff --git a/mccoroutine-bukkit-sample/src/main/resources/plugin.yml b/mccoroutine-bukkit-sample/src/main/resources/plugin.yml
index 41646781..f730982b 100644
--- a/mccoroutine-bukkit-sample/src/main/resources/plugin.yml
+++ b/mccoroutine-bukkit-sample/src/main/resources/plugin.yml
@@ -1,5 +1,5 @@
 name: MCCoroutine-Sample
-version: 2.11.0
+version: 2.12.0
 author: Shynixn
 main: com.github.shynixn.mccoroutine.bukkit.sample.MCCoroutineSamplePlugin
 commands:
diff --git a/mccoroutine-bungeecord-sample/src/main/resources/plugin.yml b/mccoroutine-bungeecord-sample/src/main/resources/plugin.yml
index 0ef873a9..4f1ce36a 100644
--- a/mccoroutine-bungeecord-sample/src/main/resources/plugin.yml
+++ b/mccoroutine-bungeecord-sample/src/main/resources/plugin.yml
@@ -1,5 +1,5 @@
 name: MCCoroutine-Sample
-version: 2.11.0
+version: 2.12.0
 author: Shynixn
 main: com.github.shynixn.mccoroutine.bungeecord.sample.MCCoroutineSamplePlugin
 commands:
diff --git a/mccoroutine-fabric-sample/build.gradle.kts b/mccoroutine-fabric-sample/build.gradle.kts
index b67aa845..ea4d40e7 100644
--- a/mccoroutine-fabric-sample/build.gradle.kts
+++ b/mccoroutine-fabric-sample/build.gradle.kts
@@ -9,8 +9,8 @@ repositories {
     mavenLocal()
 }
 dependencies {
-    implementation("com.github.shynixn.mccoroutine:mccoroutine-fabric-api:2.11.0")
-    implementation("com.github.shynixn.mccoroutine:mccoroutine-fabric-core:2.11.0")
+    implementation("com.github.shynixn.mccoroutine:mccoroutine-fabric-api:2.12.0")
+    implementation("com.github.shynixn.mccoroutine:mccoroutine-fabric-core:2.12.0")
 
     minecraft("com.mojang", "minecraft", project.extra["minecraft_version"] as String)
     mappings("net.fabricmc", "yarn", project.extra["yarn_mappings"] as String, null, "v2")
diff --git a/mccoroutine-minestom-sample/src/main/resources/extension.json b/mccoroutine-minestom-sample/src/main/resources/extension.json
index a257ea48..57d9d982 100644
--- a/mccoroutine-minestom-sample/src/main/resources/extension.json
+++ b/mccoroutine-minestom-sample/src/main/resources/extension.json
@@ -1,5 +1,5 @@
 {
   "entrypoint": "com.github.shynixn.mccoroutine.minestom.sample.extension.MCCoroutineSampleExtension",
   "name": "MCCoroutineSampleExtension",
-  "version": "2.11.0"
+  "version": "2.12.0"
 }
diff --git a/mccoroutine-sponge-sample/src/main/resources/mcmod.info b/mccoroutine-sponge-sample/src/main/resources/mcmod.info
index 46385ec1..a81381ca 100644
--- a/mccoroutine-sponge-sample/src/main/resources/mcmod.info
+++ b/mccoroutine-sponge-sample/src/main/resources/mcmod.info
@@ -1,7 +1,7 @@
 [{
     "modid": "mccoroutinesample",
     "name": "MCCoroutineSample",
-    "version": "2.11.0",
+    "version": "2.12.0",
     "description": "MCCoroutineSample is sample plugin to use MCCoroutine in Sponge.",
     "authorList": [
         "Shynixn"