diff --git a/docs/julia/heater_3d_mesh.py b/docs/julia/heater_3d_mesh.py
index 0056222e..c5413fb8 100644
--- a/docs/julia/heater_3d_mesh.py
+++ b/docs/julia/heater_3d_mesh.py
@@ -39,7 +39,7 @@
     "core": {"resolution": 0.3},
     "via2": {"resolution": 0.2},
     "via1": {"resolution": 0.2},
-    "heater": {"resolution": 0.2},
+    "heater": {"resolution": 0.5},
 }
 geometry = get_mesh(
     type="3D",