diff --git a/overviewer_core/src/mc_id.h b/overviewer_core/src/mc_id.h
index 52c358d..dd3126f 100644
--- a/overviewer_core/src/mc_id.h
+++ b/overviewer_core/src/mc_id.h
@@ -411,6 +411,7 @@ enum mc_block_id {
     block_mud_brick_slab = 1124,
     block_mangrove_roots = 1125,
     block_mangrove_log = 1126,
+    block_muddy_mangrove_roots = 1127,
 
     // 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 594585e..e4c1beb 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 112
+#define OVERVIEWER_EXTENSION_VERSION 113
 
 #include <stdbool.h>
 #include <stdint.h>
diff --git a/overviewer_core/textures.py b/overviewer_core/textures.py
index e6b36b0..b809d24 100644
--- a/overviewer_core/textures.py
+++ b/overviewer_core/textures.py
@@ -6388,3 +6388,5 @@ block(blockid=1122, top_image="assets/minecraft/textures/block/packed_mud.png")
 block(blockid=1123, top_image="assets/minecraft/textures/block/mud_bricks.png")
 block(blockid=1125, top_image="assets/minecraft/textures/block/mangrove_roots_top.png",
       side_image="assets/minecraft/textures/block/mangrove_roots_side.png")
+block(blockid=1127, top_image="assets/minecraft/textures/block/muddy_mangrove_roots_top.png",
+      side_image="assets/minecraft/textures/block/muddy_mangrove_roots_side.png")
diff --git a/overviewer_core/world.py b/overviewer_core/world.py
index 17839f5..0fd3f79 100644
--- a/overviewer_core/world.py
+++ b/overviewer_core/world.py
@@ -872,6 +872,7 @@ class RegionSet(object):
             'minecraft:mangrove_roots': (1125, 0),
             'minecraft:mangrove_log': (1126, 0),
             'minecraft:stripped_mangrove_log': (1126, 1),
+            'minecraft:muddy_mangrove_roots': (1127, 0),
 
             # New blocks
             'minecraft:carved_pumpkin': (11300, 0),