diff --git a/product_sale_price_from_pricelist/CHANGELOG.md b/product_sale_price_from_pricelist/CHANGELOG.md
index 80b57f6..ef38340 100644
--- a/product_sale_price_from_pricelist/CHANGELOG.md
+++ b/product_sale_price_from_pricelist/CHANGELOG.md
@@ -5,6 +5,16 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [18.0.2.4.0] - 2026-02-14
+
+### Fixed
+
+- **Clean up old ir_property records**
+  - Error: `TypeError: float() argument must be a string or a real number, not 'dict'`
+  - Added post-migration to delete ir_property records left over from company_dependent fields
+  - This prevents dict values from being passed to Float fields during onchange
+  - Migration runs after module load to ensure ir_property table exists
+
 ## [18.0.2.3.0] - 2026-02-14
 
 ### Fixed
diff --git a/product_sale_price_from_pricelist/__manifest__.py b/product_sale_price_from_pricelist/__manifest__.py
index 1fe4285..32023e7 100644
--- a/product_sale_price_from_pricelist/__manifest__.py
+++ b/product_sale_price_from_pricelist/__manifest__.py
@@ -2,7 +2,7 @@
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 {  # noqa: B018
     "name": "Product Sale Price from Pricelist",
-    "version": "18.0.2.3.0",
+    "version": "18.0.2.4.0",
     "category": "product",
     "summary": "Set sale price from pricelist based on last purchase price",
     "author": "Odoo Community Association (OCA), Criptomart",
diff --git a/product_sale_price_from_pricelist/migrations/18.0.2.4.0/post-migration.py b/product_sale_price_from_pricelist/migrations/18.0.2.4.0/post-migration.py
new file mode 100644
index 0000000..d2386b1
--- /dev/null
+++ b/product_sale_price_from_pricelist/migrations/18.0.2.4.0/post-migration.py
@@ -0,0 +1,74 @@
+# Copyright (C) 2026 Criptomart
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+import logging
+
+_logger = logging.getLogger(__name__)
+
+
+def migrate(cr, version):
+    """Clean up old ir_property records for fields that are no longer company_dependent.
+
+    This migration removes ir_property records that were created when these fields
+    were company_dependent. These records can cause TypeError: float() argument must
+    be a string or a real number, not 'dict' when Odoo tries to read the fields.
+
+    Fields cleaned up:
+    - last_purchase_price_updated
+    - list_price_theoritical
+    - last_purchase_price_received
+    - last_purchase_price_compute_type
+    """
+    _logger.info(
+        "Cleaning up ir_property records for product_sale_price_from_pricelist fields"
+    )
+
+    # Check if ir_property table exists
+    cr.execute("""
+        SELECT EXISTS (
+            SELECT FROM information_schema.tables
+            WHERE table_name = 'ir_property'
+        )
+    """)
+    table_exists = cr.fetchone()[0]
+
+    if not table_exists:
+        _logger.info(
+            "Table ir_property does not exist yet, skipping cleanup (fresh install)"
+        )
+        return
+
+    # Delete all ir_property records for these fields on product.product
+    cr.execute("""
+        DELETE FROM ir_property
+        WHERE name IN (
+            'last_purchase_price_updated',
+            'list_price_theoritical',
+            'last_purchase_price_received',
+            'last_purchase_price_compute_type'
+        )
+        AND res_id LIKE 'product.product,%%'
+    """)
+    deleted_count = cr.rowcount
+    _logger.info("Deleted %s ir_property records for product.product", deleted_count)
+
+    # Also clean up for product.template if any exist
+    cr.execute("""
+        DELETE FROM ir_property
+        WHERE name IN (
+            'last_purchase_price_updated',
+            'list_price_theoritical',
+            'last_purchase_price_received',
+            'last_purchase_price_compute_type'
+        )
+        AND res_id LIKE 'product.template,%%'
+    """)
+    deleted_template_count = cr.rowcount
+    _logger.info(
+        "Deleted %s ir_property records for product.template", deleted_template_count
+    )
+
+    _logger.info(
+        "Migration completed successfully. Total records deleted: %s",
+        deleted_count + deleted_template_count,
+    )