diff --git a/CHANGELOG.md b/CHANGELOG.md
index 152ae6c..0f3ead8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,7 +14,7 @@ All notable changes to ComfyUI-AusBoss are documented here.
   sure SAM 3 must be, **Fill holes**, and **Free VRAM**, which takes SAM 3
   out of the graphics card's memory right after the search. Turn it on in a
   workflow that loads a big model after this node. The search is
-  ComfyUI's own SAM 3 (ComfyUI 0.38 or newer): wire model and clip from a
+  ComfyUI's own SAM 3 (ComfyUI 0.20 or newer): wire model and clip from a
   Load Checkpoint that loads the SAM 3 file.
 - **Opening More no longer shrinks the picture.** A node you made taller
   keeps that height when a group such as **More** opens or closes on its
diff --git a/README.md b/README.md
index c3ecdb9..95b70e8 100644
--- a/README.md
+++ b/README.md
@@ -172,7 +172,7 @@ Krea 2 Inpaint Masked turns the painted fur coat into a leather jacket, using Ma
 
 Type what to find in a picture, like "the dog" or "the red jacket", and get its mask. Nothing to paint. The node shows what it found, tinted on the picture, with how sure it is, and **FIND** runs only this node so you can check the mask before the rest of the workflow runs. When it finds nothing it stops the run with a plain message, so nothing after it runs on an empty mask; a setting passes an empty mask on instead.
 
-It also returns the thing cut out on a see-through background, and how many things matched. Under **More**: how sure SAM 3 must be, fill the holes in the mask, and free SAM 3 from VRAM after the search. If you build a workflow that loads a big model after this node, turn **Free VRAM** on. The search is ComfyUI's own SAM 3: wire `model` and `clip` from a Load Checkpoint that loads the SAM 3 file. Needs ComfyUI 0.38 or newer.
+It also returns the thing cut out on a see-through background, and how many things matched. Under **More**: how sure SAM 3 must be, fill the holes in the mask, and free SAM 3 from VRAM after the search. If you build a workflow that loads a big model after this node, turn **Free VRAM** on. The search is ComfyUI's own SAM 3: wire `model` and `clip` from a Load Checkpoint that loads the SAM 3 file. Needs ComfyUI 0.20 or newer, which has SAM 3 built in.
 
 ### Mask Refine
 
diff --git a/js/docs/AUSBOSS_NODES_MaskByName.md b/js/docs/AUSBOSS_NODES_MaskByName.md
index 36daebe..0f7358b 100644
--- a/js/docs/AUSBOSS_NODES_MaskByName.md
+++ b/js/docs/AUSBOSS_NODES_MaskByName.md
@@ -80,7 +80,7 @@ nothing instead.
 - Each name can match up to 16 things. Without that, SAM 3 returns one match
   per name, and only one of two scarves is found.
 - The search is ComfyUI's own SAM 3 (CLIP Text Encode, then SAM3 Detect, with
-  its two edge passes). The node needs ComfyUI 0.38 or newer and says so on an
+  its two edge passes). The node needs ComfyUI 0.20 or newer and says so on an
   older one.
 - The mask is the size of the picture. For more control over the edge (close
   holes, smooth, snap to the picture) follow it with Mask Refine.
@@ -95,6 +95,8 @@ nothing instead.
   SAM 3 out at once, also after a search that found nothing. Measured on
   one machine: about 1.7 GB of VRAM back, and a search took 0.8 seconds
   instead of 0.5.
+  It needs ComfyUI 0.23 or newer. On an older one the switch does nothing
+  and the run goes on.
 - With several pictures in a batch, each one is searched on its own. A
   picture without the thing gets an empty mask, and the run stops only when
   no picture has it.
diff --git a/nodes/_mask_by_name_helpers.py b/nodes/_mask_by_name_helpers.py
index 7b96d7f..695e77b 100644
--- a/nodes/_mask_by_name_helpers.py
+++ b/nodes/_mask_by_name_helpers.py
@@ -31,7 +31,7 @@ TINT_STRENGTH = 0.5
 
 NO_NAME = 'Mask by Name: type what to find, like "the dog" or "the jacket".'
 NEEDS_SAM3 = (
-    "Mask by Name needs ComfyUI 0.38 or newer. It uses ComfyUI's own SAM 3 "
+    "Mask by Name needs ComfyUI 0.20 or newer. It uses ComfyUI's own SAM 3 "
     "Detect node, and this ComfyUI does not have it."
 )
 NOT_SAM3 = (