diff --git a/tool/src/aurora_iconset_builder/__init__.py b/tool/src/aurora_iconset_builder/__init__.py
index 8889ac0..ae2191e 100644
--- a/tool/src/aurora_iconset_builder/__init__.py
+++ b/tool/src/aurora_iconset_builder/__init__.py
@@ -1,4 +1,5 @@
 from pathlib import Path
+from assemblicon.highlevel.utils import DEFAULT_FD_THUMBNAIL_HWS
 from assemblicon.highlevel.environment import Environment
 from assemblicon.highlevel.context import Context
 from assemblicon.logger import APP_LOGGER as LOGGER
@@ -19,7 +20,14 @@ def main() -> None:
     iconset_input = repository_root / "src"
     iconset_output = repository_root / "artifact"
     prologue = AuroraPrologue(
-        iconset_input, iconset_output, opts.svg_render, tempdir_initializer
+        iconset_input,
+        iconset_output,
+        opts.svg_render,
+        # TODO: For easy testing, we only build 32x32 and 48x48.
+        # Enable full generation after testing.
+        # DEFAULT_FD_THUMBNAIL_HWS,
+        (32, 48, 256),
+        tempdir_initializer,
     )
     env = Environment(prologue)
     ctx = Context(env)
diff --git a/tool/uv.lock b/tool/uv.lock
index e4ddf74..51d15e8 100644
--- a/tool/uv.lock
+++ b/tool/uv.lock
@@ -5,7 +5,7 @@ requires-python = ">=3.13"
 [[package]]
 name = "assemblicon"
 version = "0.1.0"
-source = { git = "https://github.com/SarasasChipWorkshop/assemblicon#0f9a2d722b873271eac4033251cfda218f6bb7fb" }
+source = { git = "https://github.com/SarasasChipWorkshop/assemblicon#0073298d45d6c44fc164456ebdec5f0d3ada5dff" }
 dependencies = [
     { name = "pillow" },
 ]