diff --git a/lib/rack/test.rb b/lib/rack/test.rb
index e24b0f8d..c2d8ba61 100644
--- a/lib/rack/test.rb
+++ b/lib/rack/test.rb
@@ -211,7 +211,7 @@ def follow_redirect!
           raise Error, 'Last response was not a redirect. Cannot follow_redirect!'
         end
 
-        if last_response.status == 307
+        if last_response.status == 307 || last_response.status == 308
           request_method = last_request.request_method
           params = last_request.params
         else
diff --git a/spec/rack/test_spec.rb b/spec/rack/test_spec.rb
index e74469c1..2108fa9a 100644
--- a/spec/rack/test_spec.rb
+++ b/spec/rack/test_spec.rb
@@ -497,6 +497,14 @@ def convert_input_hash_to_string(value)
     end.must_raise(Rack::Test::Error)
   end
 
+
+  it 'keeps the original method and params for HTTP 308' do
+    post '/redirect?status=308', foo: 'bar'
+    follow_redirect!
+    last_response.body.must_include 'post'
+    last_response.body.must_include 'foo'
+    last_response.body.must_include 'bar'
+  end
   it 'keeps the original method and params for HTTP 307' do
     post '/redirect?status=307', foo: 'bar'
     follow_redirect!