diff --git a/nodes.py b/nodes.py
index 04c0d83..e81cc4f 100644
--- a/nodes.py
+++ b/nodes.py
@@ -176,7 +176,25 @@ class PromptCombiner:
 
     @classmethod
     def IS_CHANGED(cls, separator, prompt_selections="{}", **kwargs):
-        return prompt_selections + str(kwargs)
+        # Build a fingerprint that includes actual prompt content,
+        # so edits to prompt text invalidate the cache.
+        try:
+            selections = _json.loads(prompt_selections)
+        except _json.JSONDecodeError:
+            selections = {}
+
+        parts = [separator, prompt_selections]
+        for key in sorted(kwargs.keys()):
+            if not key.startswith("selection_"):
+                continue
+            category = kwargs[key]
+            prompt_name = _clean_name(selections.get(key, ""))
+            if category and prompt_name:
+                prompt = db.get_prompt_by_name(prompt_name, category)
+                if prompt:
+                    parts.append(prompt["text"])
+                    parts.append(str(prompt.get("loras", [])))
+        return "|".join(parts)
 
 
 class ApplyLoraStack: