diff --git a/README.md b/README.md
index f4497e1..10461d0 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,7 @@ This custom node helps to conveniently enhance images through Detector, Detailer
 
 
 ## NOTICE
+* V4.77: Compatibility patch applied. Requires ComfyUI version (Oct. 8th) or later.
 * V4.73.3: ControlNetApply (SEGS) supports AnimateDiff
 * V4.20.1: Due to the feature update in `RegionalSampler`, the parameter order has changed, causing malfunctions in previously created `RegionalSamplers`. Please adjust the parameters accordingly.
 * V4.12: `MASKS` is changed to `MASK`.
diff --git a/modules/impact/config.py b/modules/impact/config.py
index 6ae10aa..7fcb8fc 100644
--- a/modules/impact/config.py
+++ b/modules/impact/config.py
@@ -2,7 +2,7 @@ import configparser
 import os
 
 
-version_code = [4, 76, 1]
+version_code = [4, 77]
 version = f"V{version_code[0]}.{version_code[1]}" + (f'.{version_code[2]}' if len(version_code) > 2 else '')
 
 dependency_version = 20
diff --git a/modules/impact/utils.py b/modules/impact/utils.py
index fcfd05e..9802214 100644
--- a/modules/impact/utils.py
+++ b/modules/impact/utils.py
@@ -495,9 +495,16 @@ def to_latent_image(pixels, vae):
     y = pixels.shape[2]
     if pixels.shape[1] != x or pixels.shape[2] != y:
         pixels = pixels[:, :x, :y, :]
-    pixels = nodes.VAEEncode.vae_encode_crop_pixels(pixels)
-    t = vae.encode(pixels[:, :, :, :3])
-    return {"samples": t}
+
+    vae_encode = nodes.VAEEncode()
+    if hasattr(nodes.VAEEncode, "vae_encode_crop_pixels"):
+        # backward compatibility
+        print(f"[Impact Pack] ComfyUI is outdated.")
+        pixels = nodes.VAEEncode.vae_encode_crop_pixels(pixels)
+        t = vae.encode(pixels[:, :, :, :3])
+        return {"samples": t}
+
+    return vae_encode.encode(vae, pixels)[0]
 
 
 def empty_pil_tensor(w=64, h=64):