diff --git a/Movecraft/build.gradle.kts b/Movecraft/build.gradle.kts
index 2678ac7a4..6b3ece292 100644
--- a/Movecraft/build.gradle.kts
+++ b/Movecraft/build.gradle.kts
@@ -66,7 +66,7 @@ hangarPublish {
         platforms {
             register(io.papermc.hangarpublishplugin.model.Platforms.PAPER) {
                 jar.set(tasks.shadowJar.flatMap { it.archiveFile })
-                platformVersions.set(listOf("1.20.6", "1.21.4"))
+                platformVersions.set(listOf("1.20.6", "1.21.5"))
             }
         }
     }
diff --git a/v1_21/build.gradle.kts b/v1_21/build.gradle.kts
index a795167e2..cdc645a8d 100644
--- a/v1_21/build.gradle.kts
+++ b/v1_21/build.gradle.kts
@@ -7,7 +7,7 @@ java.toolchain.languageVersion = JavaLanguageVersion.of(21)
 
 dependencies {
     api(project(":movecraft-api"))
-    paperweight.paperDevBundle("1.21.4-R0.1-SNAPSHOT")
+    paperweight.paperDevBundle("1.21.5-R0.1-SNAPSHOT")
 }
 
 description = "Movecraft-v1_21"
diff --git a/v1_21/src/main/java/net/countercraft/movecraft/compat/v1_21/IWorldHandler.java b/v1_21/src/main/java/net/countercraft/movecraft/compat/v1_21/IWorldHandler.java
index 8d9d1ca8d..bdec20a7e 100644
--- a/v1_21/src/main/java/net/countercraft/movecraft/compat/v1_21/IWorldHandler.java
+++ b/v1_21/src/main/java/net/countercraft/movecraft/compat/v1_21/IWorldHandler.java
@@ -52,7 +52,7 @@ public class IWorldHandler extends WorldHandler {
 
     public IWorldHandler() {
         String version = Bukkit.getServer().getMinecraftVersion();
-        if (!version.equals("1.21.4"))
+        if (!version.equals("1.21.5"))
             throw new IllegalStateException("Movecraft is not compatible with this version of Minecraft: " + version);
     }
 
@@ -242,7 +242,7 @@ private void setBlockFast(@NotNull Level world, @NotNull BlockPos position, @Not
         LevelChunkSection section = chunk.getSections()[chunkSection];
         if (section == null) {
             // Put a GLASS block to initialize the section. It will be replaced next with the real block.
-            chunk.setBlockState(position, Blocks.GLASS.defaultBlockState(), false);
+            chunk.setBlockState(position, Blocks.GLASS.defaultBlockState(), 0);
             section = chunk.getSections()[chunkSection];
         }
         if (section.getBlockState(position.getX() & 15, position.getY() & 15, position.getZ() & 15).equals(data)) {