diff --git a/lib/solana_rpc_ruby/api_client.rb b/lib/solana_rpc_ruby/api_client.rb
index ea0cd77..3169950 100644
--- a/lib/solana_rpc_ruby/api_client.rb
+++ b/lib/solana_rpc_ruby/api_client.rb
@@ -53,6 +53,7 @@ def call_api(body:, http_method:, params: {})
            Net::HTTPNotFound,
            Net::HTTPClientException,
            Net::HTTPFatalError,
+           Net::HTTPTooManyRequests,
            Net::ReadTimeout,
            Errno::ECONNREFUSED,
            SocketError => e
diff --git a/spec/lib/solana_rpc_ruby/api_client_spec.rb b/spec/lib/solana_rpc_ruby/api_client_spec.rb
index 6edf64e..feba1f8 100644
--- a/spec/lib/solana_rpc_ruby/api_client_spec.rb
+++ b/spec/lib/solana_rpc_ruby/api_client_spec.rb
@@ -88,6 +88,18 @@
         end
       end
 
+      describe 'Net::HTTPTooManyRequests' do
+        it 'raise error correctly' do
+          allow(http).to \
+            receive(:request).with(an_instance_of(Net::HTTP::Post))
+              .and_raise(Net::HTTPTooManyRequests.new('1.1', 429, ''))
+
+          expect do
+            described_class.new.call_api(body: {}, http_method: :post)
+          end.to raise_error(SolanaRpcRuby::ApiError, 'Net::HTTPTooManyRequests')
+        end
+      end
+
       describe 'Net::ReadTimeout' do
         it 'raise error correctly' do
           allow(http).to \