diff --git a/Minecraft.Server.FourKit/Material.cs b/Minecraft.Server.FourKit/Material.cs
index e70d5b26..982296be 100644
--- a/Minecraft.Server.FourKit/Material.cs
+++ b/Minecraft.Server.FourKit/Material.cs
@@ -182,6 +182,8 @@ public enum Material
     INVERTED_DAYLIGHT_DETECTOR = 178,
     RED_SANDSTONE = 179,
     RED_SANDSTONE_STAIRS = 180,
+    DOUBLE_STEP2 = 181,
+    STEP2 = 182,
     SPRUCE_FENCE_GATE = 183,
     BIRCH_FENCE_GATE = 184,
     JUNGLE_FENCE_GATE = 185,