diff --git a/build.gradle.kts b/build.gradle.kts
index 54453c2ed..9539df2a0 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -499,7 +499,8 @@ val supportedMinecraftVersions = listOf(
     MinecraftRunTarget("1.21.1", 21),
     MinecraftRunTarget("1.21.4", 21),
     MinecraftRunTarget("1.21.8", 21),
-    MinecraftRunTarget("26.1.2", 25)
+    MinecraftRunTarget("26.1.2", 25),
+    MinecraftRunTarget("26.3", 25)
 )
 
 fun RunServer.configureGuildsRunServer(target: MinecraftRunTarget) {
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 69e960f2c..ae26ac5a9 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -10,7 +10,7 @@ quark = "1.3.0"
 junit = "5.11.4"
 mockito = "5.24.0"
 
-minecraft-spigot-api = "26.2-R0.1-SNAPSHOT"
+minecraft-spigot-api = "26.3-R0.1-SNAPSHOT"
 minecraft-spigot-api-legacy = "1.8.8-R0.1-SNAPSHOT"
 # Newest Spigot API that is still Java 11 loadable. The main source set compiles against the current
 # API, whose bytecode a Java 11 JVM cannot load, so the tests get this one instead.
@@ -22,7 +22,7 @@ taskchain = "3.7.2"
 worldguardwrapper = "1.1.9-SNAPSHOT"
 configme = "1.3.0"
 jsonconfiguration = "1.1"
-xseries = "13.7.1"
+xseries = "14.0.0"
 adventure-platform-bukkit = "4.4.1"
 # 3.1.13 changes GUI constructor compatibility; current GUI classes still extend old constructors.
 triumph-gui = "3.1.11"
@@ -73,4 +73,4 @@ run-paper = { id = "xyz.jpenilla.run-paper", version.ref = "run-paper" }
 versions = { id = "io.github.ben-manes.versions", version.ref = "versions-plugin" }
 dokka = { id = "org.jetbrains.dokka", version.ref = "dokka" }
 spotless = { id = "com.diffplug.spotless", version.ref = "spotless" }
-quark = { id = "org.bxteam.quark", version.ref = "quark" }
\ No newline at end of file
+quark = { id = "org.bxteam.quark", version.ref = "quark" }
diff --git a/src/main/java/me/glaremasters/guilds/guild/GuildSkull.java b/src/main/java/me/glaremasters/guilds/guild/GuildSkull.java
index 7443a6a75..d9a9aedc7 100644
--- a/src/main/java/me/glaremasters/guilds/guild/GuildSkull.java
+++ b/src/main/java/me/glaremasters/guilds/guild/GuildSkull.java
@@ -1,8 +1,8 @@
 package me.glaremasters.guilds.guild;
 
-import com.cryptomorin.xseries.profiles.builder.XSkull;
 import com.cryptomorin.xseries.profiles.objects.ProfileInputType;
 import com.cryptomorin.xseries.profiles.objects.Profileable;
+import me.glaremasters.guilds.utils.SkullUtils;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
 
@@ -24,8 +24,8 @@ public class GuildSkull {
     public GuildSkull(Player player) {
         final Profileable playerProfile = Profileable.of(player);
 
-        itemStack = XSkull.createItem().profile(playerProfile).apply();
-        serialized = XSkull.of(itemStack.getItemMeta()).getProfileValue();
+        itemStack = SkullUtils.create(playerProfile);
+        serialized = SkullUtils.profileValue(itemStack, player.getUniqueId().toString());
     }
 
     /**
@@ -57,12 +57,12 @@ public ItemStack createSkull() {
             final ProfileInputType backupType = ProfileInputType.typeOf("c10591e6909e6a281b371836e462d67a2c78fa0952e910f32b41a26c48c1757c");
             final Profileable backupProfile = Profileable.of(backupType, serialized);
 
-            return XSkull.createItem().profile(backupProfile).apply();
+            return SkullUtils.create(backupProfile);
         }
 
         final Profileable playerProfile = Profileable.of(type, serialized);
 
-        return XSkull.createItem().profile(playerProfile).apply();
+        return SkullUtils.create(playerProfile);
     }
 
     /**
diff --git a/src/main/java/me/glaremasters/guilds/listeners/EntityListener.java b/src/main/java/me/glaremasters/guilds/listeners/EntityListener.java
index b056ac669..43f39e2d6 100644
--- a/src/main/java/me/glaremasters/guilds/listeners/EntityListener.java
+++ b/src/main/java/me/glaremasters/guilds/listeners/EntityListener.java
@@ -2,6 +2,7 @@
 
 import ch.jalu.configme.SettingsManager;
 import com.cryptomorin.xseries.XPotion;
+import com.cryptomorin.xseries.XTag;
 import me.glaremasters.guilds.challenges.ChallengeHandler;
 import me.glaremasters.guilds.configuration.sections.GuildSettings;
 import me.glaremasters.guilds.guild.Guild;
@@ -239,7 +240,7 @@ public void onSplash(PotionSplashEvent event) {
      */
     private boolean isHarmfulPotion(final ThrownPotion potion) {
         for (final PotionEffect effect : potion.getEffects()) {
-            if (XPotion.DEBUFFS.contains(XPotion.matchXPotion(effect.getType()))) {
+            if (XTag.DEBUFFS.isTagged(XPotion.of(effect.getType()))) {
                 return true;
             }
         }
diff --git a/src/main/java/me/glaremasters/guilds/utils/GuiUtils.java b/src/main/java/me/glaremasters/guilds/utils/GuiUtils.java
index 93a11db94..b617f2e4c 100644
--- a/src/main/java/me/glaremasters/guilds/utils/GuiUtils.java
+++ b/src/main/java/me/glaremasters/guilds/utils/GuiUtils.java
@@ -1,7 +1,6 @@
 package me.glaremasters.guilds.utils;
 
 import com.cryptomorin.xseries.XMaterial;
-import com.cryptomorin.xseries.profiles.builder.XSkull;
 import com.cryptomorin.xseries.profiles.objects.ProfileInputType;
 import com.cryptomorin.xseries.profiles.objects.Profileable;
 import me.glaremasters.guilds.guild.GuildMember;
@@ -62,7 +61,7 @@ public static ItemStack createSkullItem(final GuildMember member, final String n
             playerProfile = Profileable.of(backupType, "c10591e6909e6a281b371836e462d67a2c78fa0952e910f32b41a26c48c1757c");
         }
 
-        final ItemStack itemStack = XSkull.createItem().profile(playerProfile).apply();
+        final ItemStack itemStack = SkullUtils.create(playerProfile);
         final ItemMeta meta = itemStack.getItemMeta();
 
         meta.setDisplayName(StringUtils.color(name));
diff --git a/src/main/java/me/glaremasters/guilds/utils/SkullUtils.java b/src/main/java/me/glaremasters/guilds/utils/SkullUtils.java
new file mode 100644
index 000000000..f29344117
--- /dev/null
+++ b/src/main/java/me/glaremasters/guilds/utils/SkullUtils.java
@@ -0,0 +1,49 @@
+package me.glaremasters.guilds.utils;
+
+import com.cryptomorin.xseries.XMaterial;
+import com.cryptomorin.xseries.profiles.builder.XSkull;
+import com.cryptomorin.xseries.profiles.objects.Profileable;
+import org.bukkit.inventory.ItemStack;
+
+/** Cross-version player skull creation with a fallback for XSeries profile reflection failures. */
+public final class SkullUtils {
+
+    private SkullUtils() {
+    }
+
+    public static ItemStack create(Profileable profile) {
+        try {
+            return XSkull.createItem().profile(profile).apply();
+        } catch (RuntimeException | LinkageError failure) {
+            if (!hasLinkageFailure(failure)) {
+                throw failure;
+            }
+
+            ItemStack head = XMaterial.PLAYER_HEAD.parseItem();
+            if (head == null) {
+                throw failure;
+            }
+            return head;
+        }
+    }
+
+    public static String profileValue(ItemStack item, String fallback) {
+        try {
+            return XSkull.of(item.getItemMeta()).getProfileValue();
+        } catch (RuntimeException | LinkageError failure) {
+            if (!hasLinkageFailure(failure)) {
+                throw failure;
+            }
+            return fallback;
+        }
+    }
+
+    private static boolean hasLinkageFailure(Throwable failure) {
+        for (Throwable cause = failure; cause != null; cause = cause.getCause()) {
+            if (cause instanceof LinkageError) {
+                return true;
+            }
+        }
+        return false;
+    }
+}