diff --git a/Gemfile b/Gemfile
index fb414a745ab..54a0affdc12 100644
--- a/Gemfile
+++ b/Gemfile
@@ -86,7 +86,7 @@ gem "active_model_serializers", "0.8.4"
 gem 'activerecord-session_store'
 gem 'acts-as-taggable-on'
 gem 'angularjs-file-upload-rails', '~> 2.4.1'
-gem 'bigdecimal', '3.0.2'
+gem 'bigdecimal'
 gem 'bootsnap', require: false
 gem 'geocoder'
 gem 'gmaps4rails'
diff --git a/Gemfile.lock b/Gemfile.lock
index 3bd6dacdf6d..2c1e11b6b2f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -180,7 +180,7 @@ GEM
     base64 (0.2.0)
     bcp47_spec (0.2.1)
     bcrypt (3.1.20)
-    bigdecimal (3.0.2)
+    bigdecimal (3.1.8)
     bindata (2.5.0)
     bindex (0.8.1)
     bootsnap (1.18.3)
@@ -865,7 +865,7 @@ DEPENDENCIES
   angularjs-rails (= 1.8.0)
   arel-helpers (~> 2.12)
   aws-sdk-s3
-  bigdecimal (= 3.0.2)
+  bigdecimal
   bootsnap
   bugsnag
   bullet
diff --git a/app/services/variant_units/option_value_namer.rb b/app/services/variant_units/option_value_namer.rb
index 511a7a1bc04..40ca0a23609 100644
--- a/app/services/variant_units/option_value_namer.rb
+++ b/app/services/variant_units/option_value_namer.rb
@@ -58,7 +58,7 @@ def option_value_value_unit
     def option_value_value_unit_scaled
       unit_scale, unit_name = scale_for_unit_value
 
-      value = (@nameable.unit_value / unit_scale).to_d.truncate(2)
+      value = (@nameable.unit_value.to_d / unit_scale).round(2)
 
       [value, unit_name]
     end
diff --git a/spec/lib/reports/sales_tax_totals_by_order_spec.rb b/spec/lib/reports/sales_tax_totals_by_order_spec.rb
index 7987ddad0b3..603331788a5 100644
--- a/spec/lib/reports/sales_tax_totals_by_order_spec.rb
+++ b/spec/lib/reports/sales_tax_totals_by_order_spec.rb
@@ -145,7 +145,8 @@
         total = report.total_excl_tax(query_row)
 
         # discounted order total - discounted order tax
-        expect(total).to eq((113.3 - 10) - (3.3 - 0.29))
+        # (113.3 - 10) - (3.3 - 0.29)
+        expect(total).to eq 100.29
       end
     end
   end