diff --git a/README.md b/README.md
index b876ce1..c45096c 100644
--- a/README.md
+++ b/README.md
@@ -147,6 +147,7 @@ You can find more info on all `kline_candlestick` attributes & available interva
 - [`fees!`](https://github.com/binance-exchange/binance-official-api-docs/blob/master/wapi-api.md#asset-detail-user_data): Get withdrawal information (status, minimum amount and fees) for all symbols.
 - [`info!`](https://github.com/binance-exchange/binance-official-api-docs/blob/master/rest-api.md#account-information-user_data): Get current account information.
 - [`trades!`](https://github.com/binance-exchange/binance-official-api-docs/blob/master/rest-api.md#account-trade-list-user_data): Get trades for a specific account and symbol.
+- [`withdraw!`](https://binance-docs.github.io/apidocs/spot/en/#withdraw-sapi): Submit a withdraw request. _I haven't confirmed this works for binance.us yet. If you find that it does, please submit a PR!_
 
 ### Binance::Api::DataStream class methods
 
diff --git a/binance-ruby.gemspec b/binance-ruby.gemspec
index 3b6dc51..3c8de8d 100644
--- a/binance-ruby.gemspec
+++ b/binance-ruby.gemspec
@@ -42,5 +42,5 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'faye-websocket', '~> 0.11'
   spec.add_dependency 'eventmachine', '~> 1.2'
 
-  spec.add_runtime_dependency 'activesupport', '~> 5.1', '>= 5.1.0'
+  spec.add_runtime_dependency 'activesupport', '>= 5.1.0'
 end
diff --git a/lib/binance/api/account.rb b/lib/binance/api/account.rb
index 6ded399..bf6520b 100644
--- a/lib/binance/api/account.rb
+++ b/lib/binance/api/account.rb
@@ -27,6 +27,23 @@ def trades!(fromId: nil, limit: 500, recvWindow: 5000, symbol: nil, api_key: nil
                         params: params.delete_if { |key, value| value.nil? },
                         security_type: :user_data, api_key: api_key, api_secret_key: api_secret_key)
         end
+
+        # @note have not tested this for binance.us yet.
+        def withdraw!(coin: nil, withdrawOrderId: nil, network: nil, address: nil, addressTag: nil, amount: nil,
+                      transactionFeeFlag: false, name: nil, recvWindow: nil, api_key: nil, api_secret_key: nil)
+          raise Error.new(message: "amount is required") if amount.nil?
+          raise Error.new(message: "coin is required") if coin.nil?
+          raise Error.new(message: "address is required") if address.nil?
+          timestamp = Configuration.timestamp
+          params = {
+            coin: coin, withdrawOrderId: withdrawOrderId, network: network, address: address, timestamp: timestamp,
+            addressTag: addressTag, amount: amount, transactionFeeFlag: transactionFeeFlag,
+            name: name, recvWindow: recvWindow,
+          }
+          Request.send!(api_key_type: :read_info, path: "/sapi/v1/capital/withdraw/apply",
+                        params: params.delete_if { |key, value| value.nil? }, method: :post,
+                        security_type: :user_data, api_key: api_key, api_secret_key: api_secret_key)
+        end
       end
     end
   end
diff --git a/lib/binance/api/version.rb b/lib/binance/api/version.rb
index 0304075..a0e858b 100644
--- a/lib/binance/api/version.rb
+++ b/lib/binance/api/version.rb
@@ -1,5 +1,5 @@
 module Binance
   module Api
-    VERSION = "1.2.2"
+    VERSION = "1.2.3"
   end
 end