diff --git a/commerce_usps.commerce_package_types.yml b/commerce_usps.commerce_package_types.yml
index fd97f37..7437f60 100755
--- a/commerce_usps.commerce_package_types.yml
+++ b/commerce_usps.commerce_package_types.yml
@@ -3,10 +3,13 @@ usps_large_flat_rate_box:
   remote_id: 'Lg Flat Rate Box'
   label: 'USPS Large Flat Rate Box'
   dimensions:
-    length: '12.25'
-    width: '12.25'
-    height: '6'
+    length: 12.25
+    width: 12.25
+    height: 6
     unit: 'in'
+  weight:
+    number: 5
+    unit: 'lb'
   shipping_method: 'usps'
 
 usps_medium_flat_rate_box_top_loading:
@@ -17,6 +20,9 @@ usps_medium_flat_rate_box_top_loading:
     width: '8.75'
     height: '6'
     unit: 'in'
+  weight:
+    number: 3
+    unit: 'lb'
   shipping_method: 'usps'
 
 usps_medium_flat_rate_box:
@@ -27,6 +33,9 @@ usps_medium_flat_rate_box:
     width: '3.25'
     height: '14'
     unit: 'in'
+  weight:
+    number: 3
+    unit: 'lb'
   shipping_method: 'usps'
 
 usps_small_flat_rate_box:
@@ -37,6 +46,9 @@ usps_small_flat_rate_box:
     width: '1.75'
     height: '5.5'
     unit: 'in'
+  weight:
+    number: 1
+    unit: 'lb'
   shipping_method: 'usps'
 
 commerce_package_type: