diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8f0087128..b32b43b5d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Next release
 
+## v6.3.38 2025 January 27
+
+- Fix a bug: unable to update product low stock alert
+
 ## v6.3.37 2025 January 22
 
 - updated rails to 7.0.8.7
diff --git a/app/services/product_service.rb b/app/services/product_service.rb
index deb8a1a29..a48f00cab 100644
--- a/app/services/product_service.rb
+++ b/app/services/product_service.rb
@@ -195,7 +195,7 @@ class ProductService
       return product unless product.low_stock_alert
       return product unless product.low_stock_threshold
 
-      affected_stocks = stock_movements&.map { |m| m[:stock_type] }&.uniq
+      affected_stocks = stock_movements&.compact_blank&.map { |m| m[:stock_type] }&.uniq
       if (product.stock['internal'] <= product.low_stock_threshold && affected_stocks&.include?('internal')) ||
          (product.stock['external'] <= product.low_stock_threshold && affected_stocks&.include?('external'))
         NotificationCenter.call type: 'notify_admin_low_stock_threshold',
diff --git a/package.json b/package.json
index ba71e2267..de5df04f2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "fab-manager",
-  "version": "6.3.37",
+  "version": "6.3.38",
   "description": "Fab-manager is the FabLab management solution. It provides a comprehensive, web-based, open-source tool to simplify your administrative tasks and your marker's projects.",
   "keywords": [
     "fablab",