diff --git a/prompt_manager.py b/prompt_manager.py
index 676661c..636dd41 100644
--- a/prompt_manager.py
+++ b/prompt_manager.py
@@ -485,11 +485,24 @@ class PromptManager(ComfyNodeABC):
         self.cleanup_gallery_system()
 
     @classmethod
-    def IS_CHANGED(cls, **kwargs):
+    def IS_CHANGED(cls, text="", category="", tags="", search_text="", 
+                    prepend_text="", append_text="", **kwargs):
         """
         ComfyUI method to determine if node needs re-execution.
         
+        This method now properly tracks input changes to avoid unnecessary
+        re-execution while still ensuring prompts are saved when inputs change.
+        
         Returns:
-            NaN to force re-execution, ensuring prompts are always saved to database
+            A hash of the input values that changes when any input changes
         """
-        return float("NaN")  # Always execute
+        # Create a hash of all the text inputs that affect the output
+        # This ensures the node only re-executes when inputs actually change
+        import hashlib
+        
+        # Combine all text inputs that affect the conditioning output
+        combined = f"{text}|{category}|{tags}|{prepend_text}|{append_text}"
+        
+        # Return a hash that will change when inputs change
+        # Note: We don't include search_text as it doesn't affect the output conditioning
+        return hashlib.sha256(combined.encode()).hexdigest()
diff --git a/prompt_manager_text.py b/prompt_manager_text.py
index ae31a4e..12ddb25 100644
--- a/prompt_manager_text.py
+++ b/prompt_manager_text.py
@@ -456,11 +456,24 @@ class PromptManagerText(ComfyNodeABC):
         self.cleanup_gallery_system()
 
     @classmethod
-    def IS_CHANGED(cls, **kwargs):
+    def IS_CHANGED(cls, text="", category="", tags="", search_text="", 
+                    prepend_text="", append_text="", **kwargs):
         """
         ComfyUI method to determine if node needs re-execution.
         
+        This method now properly tracks input changes to avoid unnecessary
+        re-execution while still ensuring prompts are saved when inputs change.
+        
         Returns:
-            NaN to force re-execution, ensuring prompts are always saved to database
+            A hash of the input values that changes when any input changes
         """
-        return float("NaN")  # Always execute
+        # Create a hash of all the text inputs that affect the output
+        # This ensures the node only re-executes when inputs actually change
+        import hashlib
+        
+        # Combine all text inputs that affect the output
+        combined = f"{text}|{category}|{tags}|{prepend_text}|{append_text}"
+        
+        # Return a hash that will change when inputs change
+        # Note: We don't include search_text as it doesn't affect the output
+        return hashlib.sha256(combined.encode()).hexdigest()
diff --git a/pyproject.toml b/pyproject.toml
index c4d4566..a48b0cb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [project]
 name = "promptmanager"
 description = "A powerful ComfyUI custom node that extends the standard text encoder with persistent prompt storage, advanced search capabilities, and an automatic image gallery system using SQLite."
-version = "3.0.20"
+version = "3.0.21"
 license = {file = "LICENSE"}
 dependencies = ["# Core dependencies for PromptManager", "# Note: Most dependencies are already included with ComfyUI", "# Already included with Python standard library:", "# - sqlite3", "# - hashlib", "# - json", "# - datetime", "# - os", "# - typing", "# - threading", "# - uuid", "# Required for gallery functionality:", "watchdog>=2.1.0              # For file system monitoring", "Pillow>=8.0.0                # For image metadata extraction (usually included with ComfyUI)", "# Optional dependencies for enhanced search functionality:", "# fuzzywuzzy[speedup]>=0.18.0  # For fuzzy string matching (optional)", "# sqlalchemy>=1.4.0            # For advanced ORM features (optional)", "# Development dependencies (optional):", "# pytest>=6.0.0                # For running tests", "# black>=22.0.0                # For code formatting", "# flake8>=4.0.0                # For linting", "# mypy>=0.910                   # For type checking"]