diff --git a/pywb/webagg/indexsource.py b/pywb/webagg/indexsource.py
index c2a7f673..c8fa4705 100644
--- a/pywb/webagg/indexsource.py
+++ b/pywb/webagg/indexsource.py
@@ -259,6 +259,7 @@ class RedisIndexSource(BaseIndexSource):
         key = res_template(member_key, params)
 
         keys = self.redis.smembers(key)
+        params['scan:' + key] = keys
 
         match_templ = match_templ.encode('utf-8')
 
diff --git a/pywb/webagg/responseloader.py b/pywb/webagg/responseloader.py
index 9e3e5ad2..9153a93d 100644
--- a/pywb/webagg/responseloader.py
+++ b/pywb/webagg/responseloader.py
@@ -48,11 +48,12 @@ class BaseLoader(object):
         out_headers['WebAgg-Type'] = 'warc'
         out_headers['Content-Type'] = 'application/warc-record'
 
-        out_headers['WebAgg-Cdx'] = to_native_str(cdx.to_cdxj().rstrip())
-        out_headers['WebAgg-Source-Coll'] = source
-
         if params.get('recorder_skip'):
             out_headers['Recorder-Skip'] = '1'
+            cdx['recorder_skip'] = '1'
+
+        out_headers['WebAgg-Cdx'] = to_native_str(cdx.to_cdxj().rstrip())
+        out_headers['WebAgg-Source-Coll'] = source
 
         if not warc_headers:
             if other_headers:
diff --git a/requirements.txt b/requirements.txt
index 61b4653a..bf94b46a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 six
-warcio==1.3
+warcio==1.3.3
 chardet
 requests
 redis