diff --git a/nodes.py b/nodes.py
index 6ad6b33..17f7ce9 100644
--- a/nodes.py
+++ b/nodes.py
@@ -17,7 +17,7 @@ VACE_MODES = [
 
 def _snap_4n1(n):
     """Round up to nearest 4n+1 value (1, 5, 9, 13, ..., 77, 81, ...)."""
-    return ((n + 2) // 4) * 4 + 1
+    return int(((n + 2) // 4) * 4 + 1)
 
 
 def _create_solid_batch(count, height, width, color_value, device="cpu"):
diff --git a/pyproject.toml b/pyproject.toml
index a9e6bf5..2322b7c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "comfyui-vace-tools"
-version = "1.1.0"
+version = "1.1.1"
 description = "Mask and control-frame generation nodes for WanVideo/VACE workflows — supports 10 generation modes, source trimming, and merge-back with optical flow blending."
 license = { file = "LICENSE" }
 requires-python = ">=3.10"