diff --git a/overviewer_core/src/block_class.c b/overviewer_core/src/block_class.c
index f4e9d28..e43168d 100644
--- a/overviewer_core/src/block_class.c
+++ b/overviewer_core/src/block_class.c
@@ -214,6 +214,9 @@ const mc_block_t block_class_ancil[] = {
     block_blackstone_wall,
     block_polished_blackstone_wall,
     block_polished_blackstone_brick_wall,
+    block_crying_obsidian,
+    block_lodestone,
+    block_respawn_anchor,
     block_double_plant,
     block_stained_glass_pane,
     block_stained_glass,
@@ -301,5 +304,6 @@ const mc_block_t block_class_nether_roof[] = {
     block_basalt,
     block_blackstone,
     block_soul_soil,
-    block_nether_gold_ore};
+    block_nether_gold_ore,
+    block_ancient_debris};
 const size_t block_class_nether_roof_len = COUNT_OF(block_class_nether_roof);
diff --git a/overviewer_core/src/mc_id.h b/overviewer_core/src/mc_id.h
index 20ecf28..d8af29f 100644
--- a/overviewer_core/src/mc_id.h
+++ b/overviewer_core/src/mc_id.h
@@ -302,6 +302,10 @@ enum mc_block_id {
     // nether redstone blocks
     block_polished_blackstone_pressure_plate = 1033,
     block_polished_blackstone_button = 1034,
+    // advanced nether blocks
+    block_crying_obsidian = 1035,
+    block_lodestone = 1036,
+    block_respawn_anchor = 1037,
 
     // adding a gap in the numbering of walls to keep them all
     // in one numbering block starting at 1792
diff --git a/overviewer_core/src/overviewer.h b/overviewer_core/src/overviewer.h
index 7541f74..7db967d 100644
--- a/overviewer_core/src/overviewer.h
+++ b/overviewer_core/src/overviewer.h
@@ -31,7 +31,7 @@
 
 // increment this value if you've made a change to the c extension
 // and want to force users to rebuild
-#define OVERVIEWER_EXTENSION_VERSION 93
+#define OVERVIEWER_EXTENSION_VERSION 94
 
 #include <stdbool.h>
 #include <stdint.h>
diff --git a/overviewer_core/textures.py b/overviewer_core/textures.py
index 28efa22..225038f 100644
--- a/overviewer_core/textures.py
+++ b/overviewer_core/textures.py
@@ -5773,3 +5773,7 @@ block(blockid=1023, top_image="assets/minecraft/textures/block/chiseled_polished
 block(blockid=1024, top_image="assets/minecraft/textures/block/gilded_blackstone.png")
 block(blockid=1025, top_image="assets/minecraft/textures/block/cracked_polished_blackstone_bricks.png")
 block(blockid=1026, top_image="assets/minecraft/textures/block/polished_blackstone_bricks.png")
+
+block(blockid=1035, top_image="assets/minecraft/textures/block/crying_obsidian.png")
+block(blockid=1036, top_image="assets/minecraft/textures/block/lodestone_top.png", side_image="assets/minecraft/textures/block/lodestone_side.png")
+block(blockid=1037, top_image="assets/minecraft/textures/block/respawn_anchor_top.png", side_image="assets/minecraft/textures/block/respawn_anchor_side1.png")
diff --git a/overviewer_core/world.py b/overviewer_core/world.py
index 39a98b2..02a09a1 100644
--- a/overviewer_core/world.py
+++ b/overviewer_core/world.py
@@ -753,7 +753,11 @@ class RegionSet(object):
             'minecraft:polished_blackstone_brick_stairs': (1032, 0),
             # nether redstone blocks
             'minecraft:polished_blackstone_pressure_plate': (1033, 0),
-            'minecraft:polished_blackstone_button': (1034,0),
+            'minecraft:polished_blackstone_button': (1034, 0),
+            # advanced nether blocks
+            'minecraft:crying_obsidian': (1035, 0),
+            'minecraft:lodestone': (1036, 0),
+            'minecraft:respawn_anchor': (1037, 0),
 
             # New blocks
             'minecraft:carved_pumpkin': (11300, 0),