diff --git a/c2me-opts-scheduling/src/main/java/com/ishland/c2me/opts/scheduling/mixin/shutdown/MixinMinecraftServer.java b/c2me-opts-scheduling/src/main/java/com/ishland/c2me/opts/scheduling/mixin/shutdown/MixinMinecraftServer.java
index 00d194029..3072f74cc 100644
--- a/c2me-opts-scheduling/src/main/java/com/ishland/c2me/opts/scheduling/mixin/shutdown/MixinMinecraftServer.java
+++ b/c2me-opts-scheduling/src/main/java/com/ishland/c2me/opts/scheduling/mixin/shutdown/MixinMinecraftServer.java
@@ -11,11 +11,12 @@
 @Mixin(MinecraftServer.class)
 public class MixinMinecraftServer {
 
-    @Shadow(aliases = "field_47139") private long timeReference;
+    @Shadow
+    private long tickStartTimeNanos;
 
     @Inject(method = "shutdown", at = @At(value = "INVOKE", target = "Lnet/minecraft/server/MinecraftServer;runTasksTillTickEnd()V", shift = At.Shift.BEFORE))
     private void shutdownBeforeRunTasks(CallbackInfo ci) {
-        this.timeReference = Util.getMeasuringTimeNano() + 100_000_000L; // 100ms
+        this.tickStartTimeNanos = Util.getMeasuringTimeNano() + 50_000_000L; // 50ms
     }
 
 }
diff --git a/gradle.properties b/gradle.properties
index 4fde00f0e..4fbce35a7 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -4,8 +4,8 @@ org.gradle.parallel=true
 fabric.loom.multiProjectOptimisation=true
 # Fabric Properties
 # check these on https://fabricmc.net/versions.html
-minecraft_version=23w43a
-yarn_mappings=23w43a+build.2
+minecraft_version=23w45a
+yarn_mappings=23w45a+build.1
 loader_version=0.14.24
 # Mod Properties
 mod_version=0.2.0+alpha.11