diff --git a/dimensions/overworld.json b/dimensions/overworld.json
index c3b67164..710f197a 100644
--- a/dimensions/overworld.json
+++ b/dimensions/overworld.json
@@ -174,7 +174,7 @@
             "minHeight": 4,
             "maxPerChunk": 11,
             "maxHeight": 40,
-            "minPerChunk": 3,
+            "minPerChunk": 5,
             "minSize": 6,
             "maxSize": 10,
             "palette": [{
@@ -187,7 +187,7 @@
             "minHeight": 1,
             "maxPerChunk": 5,
             "maxHeight": 67,
-            "minPerChunk": 1,
+            "minPerChunk": 3,
             "minSize": 3,
             "maxSize": 5,
             "palette": [{"block": "minecraft:gold_ore"}],
@@ -197,7 +197,7 @@
             "minHeight": 1,
             "maxPerChunk": 8,
             "maxHeight": 29,
-            "minPerChunk": 2,
+            "minPerChunk": 4,
             "minSize": 3,
             "maxSize": 8,
             "palette": [{"block": "minecraft:lapis_ore"}],
@@ -207,7 +207,7 @@
             "minHeight": 1,
             "maxPerChunk": 16,
             "maxHeight": 120,
-            "minPerChunk": 8,
+            "minPerChunk": 16,
             "minSize": 4,
             "maxSize": 8,
             "palette": [{"block": "minecraft:iron_ore"}],
@@ -217,7 +217,7 @@
             "minHeight": 1,
             "maxPerChunk": 15,
             "maxHeight": 64,
-            "minPerChunk": 8,
+            "minPerChunk": 9,
             "minSize": 4,
             "maxSize": 9,
             "palette": [{"block": "minecraft:copper_ore"}],
@@ -227,7 +227,7 @@
             "minHeight": 1,
             "maxPerChunk": 15,
             "maxHeight": 175,
-            "minPerChunk": 9,
+            "minPerChunk": 20,
             "minSize": 6,
             "maxSize": 10,
             "palette": [{"block": "minecraft:coal_ore"}],