--- a/com/mojang/blaze3d/vertex/PoseStack.java
+++ b/com/mojang/blaze3d/vertex/PoseStack.java
@@ -11,7 +_,7 @@
 import org.joml.Quaternionf;
 
 @OnlyIn(Dist.CLIENT)
-public class PoseStack {
+public class PoseStack implements net.minecraftforge.client.extensions.IForgePoseStack {
    private final Deque<PoseStack.Pose> f_85834_ = Util.m_137469_(Queues.newArrayDeque(), (p_85848_) -> {
       Matrix4f matrix4f = new Matrix4f();
       Matrix3f matrix3f = new Matrix3f();