diff --git a/paper-api/src/main/java/org/bukkit/event/entity/CreatureSpawnEvent.java b/paper-api/src/main/java/org/bukkit/event/entity/CreatureSpawnEvent.java
index d843f4ad88..6d5c81824c 100644
--- a/paper-api/src/main/java/org/bukkit/event/entity/CreatureSpawnEvent.java
+++ b/paper-api/src/main/java/org/bukkit/event/entity/CreatureSpawnEvent.java
@@ -185,6 +185,10 @@ public class CreatureSpawnEvent extends EntitySpawnEvent {
          * When an entity is shaking in Powder Snow and a new entity spawns.
          */
         FROZEN,
+        /**
+         * When a tadpole converts to a frog
+         */
+        METAMORPHOSIS,
         /**
          * When a creature is spawned by the "/summon" command
          */
diff --git a/paper-api/src/main/java/org/bukkit/event/entity/EntityTransformEvent.java b/paper-api/src/main/java/org/bukkit/event/entity/EntityTransformEvent.java
index 1e702f94e1..1592aac603 100644
--- a/paper-api/src/main/java/org/bukkit/event/entity/EntityTransformEvent.java
+++ b/paper-api/src/main/java/org/bukkit/event/entity/EntityTransformEvent.java
@@ -112,6 +112,10 @@ public class EntityTransformEvent extends EntityEvent implements Cancellable {
          * When a piglin converts to a zombified piglin.
          */
         PIGLIN_ZOMBIFIED,
+        /**
+         * When a tadpole converts to a frog
+         */
+        METAMORPHOSIS,
         /**
          * When reason is unknown.
          */