diff --git a/gradle.properties b/gradle.properties
index e0af52d..0962040 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -2,13 +2,16 @@
 org.gradle.jvmargs=-Xmx1G
 # Fabric Properties
 # check these on https://modmuss50.me/fabric.html
-minecraft_version=1.21.4
-yarn_mappings=1.21.4+build.8
-loader_version=0.16.14
 # Mod Properties
 mod_version=1.0
 maven_group=org.walruslab
 archives_base_name=kepler
 # Dependencies
 # check this on https://modmuss50.me/fabric.html
-fabric_version=0.119.2+1.21.4
+minecraft_version=1.21.7
+yarn_mappings=1.21.7+build.8
+loader_version=0.16.14
+loom_version=1.11-SNAPSHOT
+
+# Fabric API
+fabric_version=0.129.0+1.21.7
\ No newline at end of file
diff --git a/src/main/java/org/walruslab/kepler/render/TrajectoryRenderer.java b/src/main/java/org/walruslab/kepler/render/TrajectoryRenderer.java
index 1bf2cd1..d7180ff 100644
--- a/src/main/java/org/walruslab/kepler/render/TrajectoryRenderer.java
+++ b/src/main/java/org/walruslab/kepler/render/TrajectoryRenderer.java
@@ -1,15 +1,15 @@
 package org.walruslab.kepler.render;
 
+import com.mojang.blaze3d.opengl.GlStateManager;
 import com.mojang.blaze3d.systems.RenderSystem;
+import com.mojang.blaze3d.vertex.VertexFormat;
 import net.fabricmc.fabric.api.client.rendering.v1.HudRenderCallback;
 import net.fabricmc.fabric.api.client.rendering.v1.WorldRenderContext;
 import net.fabricmc.fabric.api.client.rendering.v1.WorldRenderEvents;
 import net.jpountz.util.Utils;
 import net.minecraft.client.MinecraftClient;
-import net.minecraft.client.gl.ShaderProgramKeys;
-import net.minecraft.client.render.BufferRenderer;
+import net.minecraft.client.render.RenderLayer;
 import net.minecraft.client.render.Tessellator;
-import net.minecraft.client.render.VertexFormat;
 import net.minecraft.client.render.VertexFormats;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.entity.projectile.ArrowEntity;
@@ -145,12 +145,9 @@ public class TrajectoryRenderer {
 
     private static void renderLine(WorldRenderContext drawContext, List<Vector3f> points, float r, float g, float b) {
         // enable z-buffer
-        RenderSystem.enableDepthTest();
-        RenderSystem.depthFunc(GL11.GL_LEQUAL);
-        RenderSystem.enableBlend();
-        RenderSystem.defaultBlendFunc();
-
-        RenderSystem.setShaderColor(r, g, b, 1.0f);
+        GlStateManager._enableDepthTest();
+        GlStateManager._depthFunc(GL11.GL_LEQUAL);
+        GlStateManager._enableBlend();
 
         var tesselator = Tessellator.getInstance();
         var buf = tesselator.begin(VertexFormat.DrawMode.DEBUG_LINE_STRIP, VertexFormats.POSITION_COLOR);
@@ -164,13 +161,9 @@ public class TrajectoryRenderer {
             float dz = (float) (point.z - playerPos.z);
 
             buf.vertex(mat, dx, dy, dz);
-
             buf.color(r, g, b, 1.0f);
         }
 
-        RenderSystem.setShader(ShaderProgramKeys.POSITION_COLOR);
-        RenderSystem.setShaderColor(1.0f, 1.0f, 1.0f, 1.0f);
-
-        BufferRenderer.drawWithGlobalProgram(buf.end());
+        RenderLayer.getDebugLineStrip(1).draw(buf.end());
     }
 }