diff --git a/build.gradle.kts b/build.gradle.kts
index f8fec2f..4a867f6 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -8,7 +8,7 @@ plugins {
 }
 
 group = "com.moulberry.axiom"
-version = "3.3.0"
+version = "4.0.1"
 description = "Serverside component for Axiom on Paper"
 
 java {
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 8ba853d..fe9ac2c 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -3,7 +3,7 @@
 bom-newest = "1.37"
 cloud-paper = "2.0.0-20240516.054251-69"
 coreprotect = "22.4"
-paper = "1.21-R0.1-SNAPSHOT"
+paper = "1.21.1-R0.1-SNAPSHOT"
 plotsquared = "7.3.9-20240513.192211-13"
 reflection-remapper = "0.1.2-20240315.033304-2"
 viaversion-api = "5.0.1"
diff --git a/src/main/java/com/moulberry/axiom/annotations/ServerAnnotations.java b/src/main/java/com/moulberry/axiom/annotations/ServerAnnotations.java
index a7a118b..5d2a217 100644
--- a/src/main/java/com/moulberry/axiom/annotations/ServerAnnotations.java
+++ b/src/main/java/com/moulberry/axiom/annotations/ServerAnnotations.java
@@ -12,7 +12,7 @@ import net.minecraft.util.datafix.DataFixTypes;
 import net.minecraft.world.level.saveddata.SavedData;
 import org.bukkit.NamespacedKey;
 import org.bukkit.World;
-import org.bukkit.craftbukkit.v1_20_R3.CraftWorld;
+import org.bukkit.craftbukkit.CraftWorld;
 import org.bukkit.persistence.PersistentDataAdapterContext;
 import org.bukkit.persistence.PersistentDataContainer;
 import org.bukkit.persistence.PersistentDataType;
diff --git a/src/main/java/com/moulberry/axiom/annotations/data/ImageAnnotationData.java b/src/main/java/com/moulberry/axiom/annotations/data/ImageAnnotationData.java
index 8461a0e..03949a1 100644
--- a/src/main/java/com/moulberry/axiom/annotations/data/ImageAnnotationData.java
+++ b/src/main/java/com/moulberry/axiom/annotations/data/ImageAnnotationData.java
@@ -5,7 +5,7 @@ import net.minecraft.network.FriendlyByteBuf;
 import org.joml.Quaternionf;
 import org.joml.Vector3f;
 
-public record ImageAnnotationData(String imageUrl, Vector3f position, Quaternionf rotation, Direction direction, float fallbackYaw, float width, int billboardMode) implements AnnotationData {
+public record ImageAnnotationData(String imageUrl, Vector3f position, Quaternionf rotation, Direction direction, float fallbackYaw, float width, float opacity, int billboardMode) implements AnnotationData {
 
     @Override
     public void setPosition(Vector3f position) {
@@ -31,6 +31,7 @@ public record ImageAnnotationData(String imageUrl, Vector3f position, Quaternion
         friendlyByteBuf.writeByte(this.direction.get3DDataValue());
         friendlyByteBuf.writeFloat(this.fallbackYaw);
         friendlyByteBuf.writeFloat(this.width);
+        friendlyByteBuf.writeFloat(this.opacity);
         friendlyByteBuf.writeByte(this.billboardMode);
     }
 
@@ -46,8 +47,9 @@ public record ImageAnnotationData(String imageUrl, Vector3f position, Quaternion
         Direction direction = Direction.from3DDataValue(friendlyByteBuf.readByte());
         float fallbackYaw = friendlyByteBuf.readFloat();
         float width = friendlyByteBuf.readFloat();
+        float opacity = friendlyByteBuf.readFloat();
         int billboardMode = friendlyByteBuf.readByte();
-        return new ImageAnnotationData(imageUrl, new Vector3f(x, y, z), new Quaternionf(rotX, rotY, rotZ, rotW), direction, fallbackYaw, width, billboardMode);
+        return new ImageAnnotationData(imageUrl, new Vector3f(x, y, z), new Quaternionf(rotX, rotY, rotZ, rotW), direction, fallbackYaw, width, opacity, billboardMode);
     }
 
 }