diff --git a/.travis.yml b/.travis.yml
index cd2e8b47..ab198f78 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,8 +5,6 @@ matrix:
           env: TOXENV=py27
         - python: 2.7
           env: TOXENV=pypy
-        - python: 3.3
-          env: TOXENV=py33
         - python: 3.4
           env: TOXENV=py34
         - python: 3.5
diff --git a/docs/news.rst b/docs/news.rst
index db805ded..cffd2510 100644
--- a/docs/news.rst
+++ b/docs/news.rst
@@ -3,6 +3,17 @@
 Release notes
 =============
 
+1.2.1
+-----
+*Release date: 2019-06-17*
+
+fixed
+~~~~~
+- http header types were breaking newer twisted versions
+- DeferredQueue was hiding a pending job when reaching max_proc
+- AddVersion's arguments' string types were breaking the environment in windows
+- Tests: Updated binary eggs to be scrapy-1.x compatible
+
 1.2.0
 -----
 *Release date: 2017-04-12*
diff --git a/scrapyd/VERSION b/scrapyd/VERSION
index 26aaba0e..6085e946 100644
--- a/scrapyd/VERSION
+++ b/scrapyd/VERSION
@@ -1 +1 @@
-1.2.0
+1.2.1
diff --git a/scrapyd/config.py b/scrapyd/config.py
index 829fa7a7..a0e509ad 100644
--- a/scrapyd/config.py
+++ b/scrapyd/config.py
@@ -1,5 +1,5 @@
 import glob
-from io import StringIO
+import io
 from pkgutil import get_data
 from six.moves.configparser import SafeConfigParser, NoSectionError, NoOptionError
 from os.path import expanduser
@@ -17,10 +17,14 @@ def __init__(self, values=None, extra_sources=()):
             sources = self._getsources()
             default_config = get_data(__package__, 'default_scrapyd.conf').decode('utf8')
             self.cp = SafeConfigParser()
-            self.cp.readfp(StringIO(default_config))
-            self.cp.read(sources)
-            for fp in extra_sources:
-                self.cp.readfp(fp)
+            self.cp.readfp(io.StringIO(default_config))
+            sources.extend(extra_sources)
+            for fname in sources:
+                try:
+                    with io.open(fname) as fp:
+                        self.cp.readfp(fp)
+                except (IOError, OSError):
+                    pass
         else:
             self.cp = SafeConfigParser(values)
             self.cp.add_section(self.SECTION)
diff --git a/scrapyd/poller.py b/scrapyd/poller.py
index ee4e30cd..aa4097f7 100644
--- a/scrapyd/poller.py
+++ b/scrapyd/poller.py
@@ -11,11 +11,11 @@ class QueuePoller(object):
     def __init__(self, config):
         self.config = config
         self.update_projects()
-        self.dq = DeferredQueue(size=1)
+        self.dq = DeferredQueue()
 
     @inlineCallbacks
     def poll(self):
-        if self.dq.pending:
+        if not self.dq.waiting:
             return
         for p, q in iteritems(self.queues):
             c = yield maybeDeferred(q.count)
diff --git a/scrapyd/tests/mybot.egg b/scrapyd/tests/mybot.egg
index 8525589b..6acb11b0 100644
Binary files a/scrapyd/tests/mybot.egg and b/scrapyd/tests/mybot.egg differ
diff --git a/scrapyd/tests/mybot2.egg b/scrapyd/tests/mybot2.egg
index c0e615e6..78ef8e72 100644
Binary files a/scrapyd/tests/mybot2.egg and b/scrapyd/tests/mybot2.egg differ
diff --git a/scrapyd/tests/mybotunicode.egg b/scrapyd/tests/mybotunicode.egg
index 60df5000..8891f915 100644
Binary files a/scrapyd/tests/mybotunicode.egg and b/scrapyd/tests/mybotunicode.egg differ
diff --git a/scrapyd/utils.py b/scrapyd/utils.py
index 2c6293d0..c9377226 100644
--- a/scrapyd/utils.py
+++ b/scrapyd/utils.py
@@ -26,7 +26,7 @@ def render_object(self, obj, txrequest):
         txrequest.setHeader('Access-Control-Allow-Origin', '*')
         txrequest.setHeader('Access-Control-Allow-Methods', 'GET, POST, PATCH, PUT, DELETE')
         txrequest.setHeader('Access-Control-Allow-Headers',' X-Requested-With')
-        txrequest.setHeader('Content-Length', len(r))
+        txrequest.setHeader('Content-Length', str(len(r)))
         return r
 
 class UtilsCache:
diff --git a/scrapyd/webservice.py b/scrapyd/webservice.py
index 5cb7562a..15c56b5f 100644
--- a/scrapyd/webservice.py
+++ b/scrapyd/webservice.py
@@ -79,9 +79,10 @@ def render_POST(self, txrequest):
 class AddVersion(WsResource):
 
     def render_POST(self, txrequest):
-        project = txrequest.args[b'project'][0].decode('utf-8')
-        version = txrequest.args[b'version'][0].decode('utf-8')
-        eggf = BytesIO(txrequest.args[b'egg'][0])
+        eggf = BytesIO(txrequest.args.pop(b'egg')[0])
+        args = native_stringify_dict(copy(txrequest.args), keys_only=False)
+        project = args['project'][0]
+        version = args['version'][0]
         self.root.eggstorage.put(eggf, project, version)
         spiders = get_spider_list(project, version=version)
         self.root.update_projects()
diff --git a/scrapyd/website.py b/scrapyd/website.py
index 6f5e189c..05abff61 100644
--- a/scrapyd/website.py
+++ b/scrapyd/website.py
@@ -154,6 +154,6 @@ def render(self, txrequest):
         s += "</html>"
 
         txrequest.setHeader('Content-Type', 'text/html; charset=utf-8')
-        txrequest.setHeader('Content-Length', len(s))
+        txrequest.setHeader('Content-Length', str(len(s)))
 
         return s.encode('utf-8')