diff --git a/runelite-api/src/main/java/net/runelite/api/events/HealthBarUpdated.java b/runelite-api/src/main/java/net/runelite/api/events/HealthBarUpdated.java
new file mode 100644
index 0000000000..127dbb2dbe
--- /dev/null
+++ b/runelite-api/src/main/java/net/runelite/api/events/HealthBarUpdated.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2021, Satoshi Oda <https://github.com/rokahakor>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.api.events;
+
+import net.runelite.api.Actor;
+import net.runelite.api.Hitsplat;
+import lombok.Data;
+
+/**
+ * An event called when an {@link Actor} health bar is updated from a {@link Hitsplat}.
+ */
+@Data
+public class HealthBarUpdated
+{
+    /**
+     * The actor the hitsplat was applied to.
+     */
+    private Actor actor;
+    /**
+     * The updated health ratio.
+     */
+    private int healthRatio;
+}
\ No newline at end of file
diff --git a/runelite-mixins/src/main/java/net/runelite/mixins/RSActorMixin.java b/runelite-mixins/src/main/java/net/runelite/mixins/RSActorMixin.java
index 1096f359fe..be40db40ef 100644
--- a/runelite-mixins/src/main/java/net/runelite/mixins/RSActorMixin.java
+++ b/runelite-mixins/src/main/java/net/runelite/mixins/RSActorMixin.java
@@ -38,6 +38,7 @@ import net.runelite.api.coords.WorldPoint;
 import net.runelite.api.events.ActorDeath;
 import net.runelite.api.events.AnimationChanged;
 import net.runelite.api.events.HitsplatApplied;
+import net.runelite.api.events.HealthBarUpdated;
 import net.runelite.api.events.GraphicChanged;
 import net.runelite.api.events.InteractingChanged;
 import net.runelite.api.events.OverheadTextChanged;
@@ -268,6 +269,11 @@ public abstract class RSActorMixin implements RSActor
 
 			this.setDead(true);
 		}
+
+		final HealthBarUpdated event = new HealthBarUpdated();
+		event.setActor(this);
+		event.setHealthRatio(healthRatio);
+		client.getCallbacks().post(event);
 	}
 
 	/**