diff --git a/composer.json b/composer.json
index b1228c7..1afcf09 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
         "fguillot/simple-validator": "v1.0.0",
         "fguillot/json-rpc": "v1.2.3",
         "fguillot/picodb": "v1.0.14 ",
-        "fguillot/picofeed": "v0.1.32",
+        "fguillot/picofeed": "v0.1.33",
         "pda/pheanstalk": "v3.1.0",
         "ircmaxell/password-compat": "^1.0.4"
     },
diff --git a/composer.lock b/composer.lock
index 9cb9ee5..1017d95 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,8 +4,8 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "adf4db185f22a2e00d21d278ba1fa7bc",
-    "content-hash": "98e20f0db34bd3ce534c09d7bfcf0179",
+    "hash": "2e41ff910022a7ea02922ced8ec2e1be",
+    "content-hash": "13b249b65e7dc65f4c7de72a80ee31c3",
     "packages": [
         {
             "name": "fguillot/json-rpc",
@@ -88,16 +88,16 @@
         },
         {
             "name": "fguillot/picofeed",
-            "version": "v0.1.32",
+            "version": "v0.1.33",
             "source": {
                 "type": "git",
                 "url": "https://github.com/fguillot/picoFeed.git",
-                "reference": "fb20400dc8400474bf50d40976fa48beb018166b"
+                "reference": "b44f1e1fdecfd2e7f158df86a23e1ea3dfb4e16f"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/fguillot/picoFeed/zipball/fb20400dc8400474bf50d40976fa48beb018166b",
-                "reference": "fb20400dc8400474bf50d40976fa48beb018166b",
+                "url": "https://api.github.com/repos/fguillot/picoFeed/zipball/b44f1e1fdecfd2e7f158df86a23e1ea3dfb4e16f",
+                "reference": "b44f1e1fdecfd2e7f158df86a23e1ea3dfb4e16f",
                 "shasum": ""
             },
             "require": {
@@ -137,7 +137,7 @@
             ],
             "description": "Modern library to handle RSS/Atom feeds",
             "homepage": "https://github.com/fguillot/picoFeed",
-            "time": "2017-04-05 19:55:52"
+            "time": "2017-04-07 01:57:15"
         },
         {
             "name": "fguillot/simple-validator",
diff --git a/vendor/composer/installed.json b/vendor/composer/installed.json
index 828e122..5f7c9b7 100644
--- a/vendor/composer/installed.json
+++ b/vendor/composer/installed.json
@@ -265,17 +265,17 @@
     },
     {
         "name": "fguillot/picofeed",
-        "version": "v0.1.32",
-        "version_normalized": "0.1.32.0",
+        "version": "v0.1.33",
+        "version_normalized": "0.1.33.0",
         "source": {
             "type": "git",
             "url": "https://github.com/fguillot/picoFeed.git",
-            "reference": "fb20400dc8400474bf50d40976fa48beb018166b"
+            "reference": "b44f1e1fdecfd2e7f158df86a23e1ea3dfb4e16f"
         },
         "dist": {
             "type": "zip",
-            "url": "https://api.github.com/repos/fguillot/picoFeed/zipball/fb20400dc8400474bf50d40976fa48beb018166b",
-            "reference": "fb20400dc8400474bf50d40976fa48beb018166b",
+            "url": "https://api.github.com/repos/fguillot/picoFeed/zipball/b44f1e1fdecfd2e7f158df86a23e1ea3dfb4e16f",
+            "reference": "b44f1e1fdecfd2e7f158df86a23e1ea3dfb4e16f",
             "shasum": ""
         },
         "require": {
@@ -295,7 +295,7 @@
         "suggest": {
             "ext-curl": "PicoFeed will use cURL if present"
         },
-        "time": "2017-04-05 19:55:52",
+        "time": "2017-04-07 01:57:15",
         "bin": [
             "picofeed"
         ],
diff --git a/vendor/fguillot/picofeed/lib/PicoFeed/Client/Curl.php b/vendor/fguillot/picofeed/lib/PicoFeed/Client/Curl.php
index 634b01e..f4a6578 100644
--- a/vendor/fguillot/picofeed/lib/PicoFeed/Client/Curl.php
+++ b/vendor/fguillot/picofeed/lib/PicoFeed/Client/Curl.php
@@ -299,7 +299,11 @@ class Curl extends Client
         list($status, $headers) = HttpHeaders::parse(explode("\n", $this->response_headers[$this->response_headers_count - 1]));
 
         if ($this->isRedirection($status)) {
-            return $this->handleRedirection($headers['Location']);
+            if (empty($headers['Location'])) {
+                $status = 200;
+            } else {
+                return $this->handleRedirection($headers['Location']);
+            }
         }
 
         return array(
diff --git a/vendor/fguillot/picofeed/lib/PicoFeed/Client/HttpHeaders.php b/vendor/fguillot/picofeed/lib/PicoFeed/Client/HttpHeaders.php
index 5ddcafc..34b8139 100644
--- a/vendor/fguillot/picofeed/lib/PicoFeed/Client/HttpHeaders.php
+++ b/vendor/fguillot/picofeed/lib/PicoFeed/Client/HttpHeaders.php
@@ -24,7 +24,7 @@ class HttpHeaders implements ArrayAccess
 
     public function offsetGet($offset)
     {
-        return $this->headers[strtolower($offset)];
+        return $this->offsetExists($offset) ? $this->headers[strtolower($offset)] : '';
     }
 
     public function offsetSet($offset, $value)
diff --git a/vendor/fguillot/picofeed/lib/PicoFeed/Reader/Reader.php b/vendor/fguillot/picofeed/lib/PicoFeed/Reader/Reader.php
index 7b26dea..769ffe9 100644
--- a/vendor/fguillot/picofeed/lib/PicoFeed/Reader/Reader.php
+++ b/vendor/fguillot/picofeed/lib/PicoFeed/Reader/Reader.php
@@ -56,13 +56,13 @@ class Reader extends Base
     /**
      * Discover and download a feed.
      *
-     * @param string $url           Feed or website url
+     * @param string $url Feed or website url
      * @param string $last_modified Last modified HTTP header
-     * @param string $etag          Etag HTTP header
-     * @param string $username      HTTP basic auth username
-     * @param string $password      HTTP basic auth password
-     *
-     * @return \PicoFeed\Client\Client
+     * @param string $etag Etag HTTP header
+     * @param string $username HTTP basic auth username
+     * @param string $password HTTP basic auth password
+     * @return Client
+     * @throws SubscriptionNotFoundException
      */
     public function discover($url, $last_modified = '', $etag = '', $username = '', $password = '')
     {