diff --git a/gradle.properties b/gradle.properties
index 36b052c..3b58f05 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -34,7 +34,7 @@ mod_name=Chrome Ball
 # The license of the mod. Review your options at https://choosealicense.com/. All Rights Reserved is the default.
 mod_license=BSD-3-Clause
 # The mod version. See https://semver.org/
-mod_version=0.7.0
+mod_version=0.8.0
 # The group ID for the mod. It is only important when publishing as an artifact to a Maven repository.
 # This should match the base package used for the mod sources.
 # See https://maven.apache.org/guides/mini/guide-naming-conventions.html
diff --git a/src/main/java/org/teacon/chromeball/common/entity/ChromeLivingEntity.java b/src/main/java/org/teacon/chromeball/common/entity/ChromeLivingEntity.java
index 3b2c90a..113031d 100644
--- a/src/main/java/org/teacon/chromeball/common/entity/ChromeLivingEntity.java
+++ b/src/main/java/org/teacon/chromeball/common/entity/ChromeLivingEntity.java
@@ -20,6 +20,7 @@ public class ChromeLivingEntity extends LivingEntity {
 
     public ChromeLivingEntity(EntityType<? extends ChromeLivingEntity> entityType, Level level) {
         super(entityType, level);
+        setInvulnerable(true);
     }
 
     @Override
@@ -62,6 +63,7 @@ public Component getDisplayName() {
     @Override
     public @NotNull InteractionResult interact(@NotNull Player player, @NotNull InteractionHand hand) {
         if (getClientClicked() == 0) {
+            // Click cooldown for protecting 4z's head.
             clientClicked = 20;
             if (!level().isClientSide()) {
                 player.awardStat(ChromeBallRegistry.MERIT_STAT.get());