diff --git a/lib/fluent/plugin/in_sqs.rb b/lib/fluent/plugin/in_sqs.rb
index f808316..81609bc 100644
--- a/lib/fluent/plugin/in_sqs.rb
+++ b/lib/fluent/plugin/in_sqs.rb
@@ -21,12 +21,6 @@ class SQSInput < Input
 
     def configure(conf)
       super
-
-      Aws.config = {
-        access_key_id: @aws_key_id,
-        secret_access_key: @aws_sec_key,
-        region: @region
-      }
     end
 
     def start
@@ -36,7 +30,12 @@ def start
     end
 
     def client
-      @client ||= Aws::SQS::Client.new(stub_responses: @stub_responses)
+      @client ||= Aws::SQS::Client.new(
+        access_key_id: @aws_key_id,
+        secret_access_key: @aws_sec_key,
+        region: @region,
+        stub_responses: @stub_responses,
+      )
     end
 
     def queue
diff --git a/lib/fluent/plugin/out_sqs.rb b/lib/fluent/plugin/out_sqs.rb
index dcd2bcc..4501277 100644
--- a/lib/fluent/plugin/out_sqs.rb
+++ b/lib/fluent/plugin/out_sqs.rb
@@ -33,15 +33,14 @@ def configure(conf)
       compat_parameters_convert(conf, :buffer, :inject)
       super
 
-      Aws.config = {
-        access_key_id: @aws_key_id,
-        secret_access_key: @aws_sec_key,
-        region: @region
-      }
     end
 
     def client
-      @client ||= Aws::SQS::Client.new
+      @client ||= Aws::SQS::Client.new(
+        access_key_id: @aws_key_id,
+        secret_access_key: @aws_sec_key,
+        region: @region
+      )
     end
 
     def resource