diff --git a/lib/btc_sell_prices.rb b/lib/btc_sell_prices.rb
index 266be82cac94389edd0f819d76cddc97068a34d2..e80aaf62701755ad0170e7f7a95385c25a087624 100644
--- a/lib/btc_sell_prices.rb
+++ b/lib/btc_sell_prices.rb
@@ -24,7 +24,7 @@ class BTCSellPrices
 			bitcoin_row = canadianbitcoins.at("#ticker > table > tbody > tr")
 			raise "Bitcoin row has moved" unless bitcoin_row.at("td").text == "Bitcoin"
 
-			BigDecimal.new(
+			BigDecimal(
 				bitcoin_row.at("td:nth-of-type(3)").text.match(/^\$(\d+\.\d+)/)[1]
 			)
 		end
diff --git a/lib/customer.rb b/lib/customer.rb
index a1c361489f228d8b0d689dd867a01617ef08c12a..01f54fc9c923f4af8d2c49be3b13da37bc3d7b4f 100644
--- a/lib/customer.rb
+++ b/lib/customer.rb
@@ -24,7 +24,7 @@ class Customer
 		customer_id,
 		jid,
 		plan: CustomerPlan.new(customer_id),
-		balance: BigDecimal.new(0),
+		balance: BigDecimal(0),
 		sgx: BackendSgx.new(customer_id)
 	)
 		@plan = plan
diff --git a/lib/electrum.rb b/lib/electrum.rb
index 0f94bf3237d45be64346fd7204975c2445d44390..4b1660ac95f65b6deeabc3d2607b2fccc20f3d19 100644
--- a/lib/electrum.rb
+++ b/lib/electrum.rb
@@ -50,7 +50,7 @@ class Electrum
 		end
 
 		def amount_for(*addresses)
-			BigDecimal.new(
+			BigDecimal(
 				@tx["outputs"]
 					.select { |o| addresses.include?(o["address"]) }
 					.map { |o| o["value_sats"] }
diff --git a/lib/plan.rb b/lib/plan.rb
index 1554b1221f96e469461f9eb9d5f13df07377c1dc..eb1507bb5a50639b044a0fb9f1ec4317dae44067 100644
--- a/lib/plan.rb
+++ b/lib/plan.rb
@@ -21,7 +21,7 @@ class Plan
 	end
 
 	def monthly_price
-		BigDecimal.new(@plan[:monthly_price]) / 10000
+		BigDecimal(@plan[:monthly_price]) / 10000
 	end
 
 	def merchant_account
diff --git a/lib/transaction.rb b/lib/transaction.rb
index 3080b5f397e32f2b44605eb02c40ee82423ae88f..b8e933783378d4009ff2300070ea90c999fa0a92 100644
--- a/lib/transaction.rb
+++ b/lib/transaction.rb
@@ -45,7 +45,7 @@ class Transaction
 		@customer_id = braintree_transaction.customer_details.id
 		@transaction_id = braintree_transaction.id
 		@created_at = braintree_transaction.created_at
-		@amount = BigDecimal.new(braintree_transaction.amount, 4)
+		@amount = BigDecimal(braintree_transaction.amount, 4)
 	end
 
 	def insert
@@ -58,7 +58,7 @@ class Transaction
 	end
 
 	def bonus
-		return BigDecimal.new(0) if amount <= 15
+		return BigDecimal(0) if amount <= 15
 		amount *
 			case amount
 			when (15..29.99)
diff --git a/test/test_btc_sell_prices.rb b/test/test_btc_sell_prices.rb
index dc53a1d55f42aaa7e58b3731f219dc2526d532ce..5ba66e6813f240d489bc83f32766ee67959d9a6f 100644
--- a/test/test_btc_sell_prices.rb
+++ b/test/test_btc_sell_prices.rb
@@ -15,7 +15,7 @@ class BTCSellPricesTest < Minitest::Test
 			body: "<div id='ticker'><table><tbody><tr>" \
 			      "<td>Bitcoin</td><td></td><td>$123.00</td>"
 		)
-		assert_equal BigDecimal.new(123), @subject.cad.sync
+		assert_equal BigDecimal(123), @subject.cad.sync
 	end
 	em :test_cad
 
@@ -25,7 +25,7 @@ class BTCSellPricesTest < Minitest::Test
 			      "<td>Bitcoin<td></td><td>$123.00</td>"
 		)
 		@redis.expect(:get, EMPromise.resolve("0.5"), ["cad_to_usd"])
-		assert_equal BigDecimal.new(123) / 2, @subject.usd.sync
+		assert_equal BigDecimal(123) / 2, @subject.usd.sync
 	end
 	em :test_usd
 end
diff --git a/test/test_buy_account_credit_form.rb b/test/test_buy_account_credit_form.rb
index 0ca1bfad2665ac76cd85027a262a611aebef7704..d8c632a8a3d364b18dbdefa5a82b5157912e2db0 100644
--- a/test/test_buy_account_credit_form.rb
+++ b/test/test_buy_account_credit_form.rb
@@ -10,7 +10,7 @@ class BuyAccountCreditFormTest < Minitest::Test
 	def setup
 		@payment_method = OpenStruct.new(card_type: "Test", last_4: "1234")
 		@form = BuyAccountCreditForm.new(
-			BigDecimal.new("15.1234"),
+			BigDecimal("15.1234"),
 			PaymentMethods.new([@payment_method])
 		)
 	end
diff --git a/test/test_customer.rb b/test/test_customer.rb
index c72f0afa1f1134377e32e71ea16a0cec6c4896fd..defcb2d9b1fc15c7432bc28078a40f885092f156 100644
--- a/test/test_customer.rb
+++ b/test/test_customer.rb
@@ -34,7 +34,7 @@ class CustomerTest < Minitest::Test
 				Matching.new do |params|
 					params[0] == "test" &&
 					params[1].is_a?(String) &&
-					BigDecimal.new(-1) == params[2]
+					BigDecimal(-1) == params[2]
 				end
 			]
 		)
@@ -61,7 +61,7 @@ class CustomerTest < Minitest::Test
 				Matching.new do |params|
 					params[0] == "test" &&
 					params[1].is_a?(String) &&
-					BigDecimal.new(-1) == params[2]
+					BigDecimal(-1) == params[2]
 				end
 			]
 		)
diff --git a/test/test_customer_repo.rb b/test/test_customer_repo.rb
index 38232002fe140f2fa0ce9dc5eba969dbb8206528..fd1804073788fc26f0f609dac93cee833cfa9abd 100644
--- a/test/test_customer_repo.rb
+++ b/test/test_customer_repo.rb
@@ -65,7 +65,7 @@ class CustomerRepoTest < Minitest::Test
 			[String, [7357]]
 		)
 		customer = repo.find(7357).sync
-		assert_equal BigDecimal.new(0), customer.balance
+		assert_equal BigDecimal(0), customer.balance
 		assert_mock db
 	end
 	em :test_find_db_empty
diff --git a/test/test_registration.rb b/test/test_registration.rb
index 96f16d26ed93c6aab8290a8d868f2b41ecedaaf5..7093b12dca898d7a5474bcb6f03680b19a4c0783 100644
--- a/test/test_registration.rb
+++ b/test/test_registration.rb
@@ -215,7 +215,7 @@ class RegistrationTest < Minitest::Test
 				)
 				Registration::Payment::Bitcoin::BTC_SELL_PRICES.expect(
 					:usd,
-					EMPromise.resolve(BigDecimal.new(1))
+					EMPromise.resolve(BigDecimal(1))
 				)
 				@bitcoin.stub(:save, EMPromise.resolve(nil)) do
 					execute_command(blather: blather) do