diff --git a/build.gradle b/build.gradle
index 3ea6d8c..14c7ecd 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,7 +1,7 @@
 import net.fabricmc.loom.task.RemapJarTask
 
 plugins {
-    id 'fabric-loom' version '1.10-SNAPSHOT'
+    id 'fabric-loom' version '1.11-SNAPSHOT'
     id 'io.github.ladysnake.chenille' version '0.14.0'
 }
 
diff --git a/gradle.properties b/gradle.properties
index fbf8e46..02c9ffb 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -3,16 +3,16 @@ org.gradle.jvmargs=-Xmx4G
 
 # Fabric Properties
 # check these on https://fabricmc.net/use
-minecraft_version=1.21.6
-yarn_mappings=1.21.6+build.1
-loader_version=0.16.14
+minecraft_version=1.21.9-rc1
+yarn_mappings=1.21.9-rc1+build.1
+loader_version=0.17.2
 # Fabric API
-fabric_version=0.127.0+1.21.6
+fabric_version=0.133.13+1.21.9
 
 elmendorf_version = 0.15.0
 
 # Mod Properties
-mod_version = 1.14.0
+mod_version = 1.15.0
 maven_group = io.github.ladysnake
 archives_base_name = pal
 
@@ -22,7 +22,7 @@ display_name = PlayerAbilityLib
 license_header = LGPL
 gpl_version = 3
 curseforge_id = 359522
-curseforge_versions = 1.21.6
+curseforge_versions = 1.21.9-snapshot
 cf_requirements = fabric-api
 modrinth_id = DHQA06r4
 release_type = release
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 37f853b..ca025c8 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
diff --git a/src/main/java/io/github/ladysnake/pal/impl/PlayerAbilityView.java b/src/main/java/io/github/ladysnake/pal/impl/PlayerAbilityView.java
index a3c401a..f8090cd 100644
--- a/src/main/java/io/github/ladysnake/pal/impl/PlayerAbilityView.java
+++ b/src/main/java/io/github/ladysnake/pal/impl/PlayerAbilityView.java
@@ -42,7 +42,7 @@ public interface PlayerAbilityView {
      * @return a view for the player's abilities
      */
     static PlayerAbilityView of(PlayerEntity player) {
-        if (player.getWorld().isClient) {
+        if (player.getEntityWorld().isClient()) {
             throw new IllegalStateException("Player abilities must be accessed from the logical server (check !world.isClient)");
         }
         return (PlayerAbilityView) player;
diff --git a/src/main/java/io/github/ladysnake/pal/impl/VanillaAbilityTracker.java b/src/main/java/io/github/ladysnake/pal/impl/VanillaAbilityTracker.java
index be66d5a..7bcc524 100644
--- a/src/main/java/io/github/ladysnake/pal/impl/VanillaAbilityTracker.java
+++ b/src/main/java/io/github/ladysnake/pal/impl/VanillaAbilityTracker.java
@@ -73,8 +73,8 @@ public void checkConflict() {
     }
 
     private static GameMode getGamemode(PlayerEntity player) {
-        if (player.getWorld().isClient) {
-            PlayerListEntry playerListEntry = Objects.requireNonNull(MinecraftClient.getInstance().getNetworkHandler()).getPlayerListEntry(player.getGameProfile().getId());
+        if (player.getEntityWorld().isClient()) {
+            PlayerListEntry playerListEntry = Objects.requireNonNull(MinecraftClient.getInstance().getNetworkHandler()).getPlayerListEntry(player.getGameProfile().id());
             return playerListEntry != null ? playerListEntry.getGameMode() : GameMode.SURVIVAL;
         } else {
             return ((ServerPlayerEntity) player).interactionManager.getGameMode();
diff --git a/src/main/resources/fabric.mod.json b/src/main/resources/fabric.mod.json
index 495b31f..f51940f 100644
--- a/src/main/resources/fabric.mod.json
+++ b/src/main/resources/fabric.mod.json
@@ -27,8 +27,8 @@
     }
   ],
   "depends": {
-    "fabric": "*",
-    "minecraft": ">=1.19.3"
+    "fabric-api": "*",
+    "minecraft": ">=1.21.9-"
   },
   "custom": {
     "modmenu:api": true
diff --git a/src/main/resources/mixins.playerabilitylib.common.json b/src/main/resources/mixins.playerabilitylib.common.json
index 182f8b9..05ada9e 100644
--- a/src/main/resources/mixins.playerabilitylib.common.json
+++ b/src/main/resources/mixins.playerabilitylib.common.json
@@ -1,7 +1,7 @@
 {
   "required": true,
   "package": "io.github.ladysnake.pal.impl.mixin",
-  "compatibilityLevel": "JAVA_17",
+  "compatibilityLevel": "JAVA_21",
   "minVersion": "0.7.11-SNAPSHOT",
   "mixins": [
     "ServerPlayerEntityMixin",
diff --git a/src/testmod/java/io/github/ladysnake/paltest/BadFlightItem.java b/src/testmod/java/io/github/ladysnake/paltest/BadFlightItem.java
index c8b118b..ca842e8 100644
--- a/src/testmod/java/io/github/ladysnake/paltest/BadFlightItem.java
+++ b/src/testmod/java/io/github/ladysnake/paltest/BadFlightItem.java
@@ -41,7 +41,7 @@ public BadFlightItem(Settings settings) {
 
     @Override
     public ActionResult use(World world, PlayerEntity user, Hand hand) {
-        if (!world.isClient) {
+        if (!world.isClient()) {
             // Direct ability access, issues abound !
             user.getAbilities().allowFlying = !user.getAbilities().allowFlying;
             user.getAbilities().flying &= user.getAbilities().allowFlying;