diff --git a/about.html b/about.html
index 2c4530185..117b14a96 100644
--- a/about.html
+++ b/about.html
@@ -44,7 +44,7 @@
 <img alt="Creative Commons License" style="border-width:0"
 src="https://i.creativecommons.org/l/by-sa/3.0/80x15.png" /></a><br />
 Copyright © 2006-2011 Ricardo Garcia Gonzalez<br />
-Copyright © 2011-2018 youtube-dl developers
+Copyright © 2011-2019 youtube-dl developers
 </div>
 </body>
 </html>
diff --git a/donations.html b/donations.html
index 45afb0d1b..49d0b2970 100644
--- a/donations.html
+++ b/donations.html
@@ -37,7 +37,7 @@
 <img alt="Creative Commons License" style="border-width:0"
 src="https://i.creativecommons.org/l/by-sa/3.0/80x15.png" /></a><br />
 Copyright © 2006-2011 Ricardo Garcia Gonzalez<br />
-Copyright © 2011-2018 youtube-dl developers
+Copyright © 2011-2019 youtube-dl developers
 </div>
 </body>
 </html>
diff --git a/download.html b/download.html
index 2b918086c..d05415eca 100644
--- a/download.html
+++ b/download.html
@@ -14,15 +14,15 @@
 
 <p>Remember <em>youtube-dl</em> requires <a href="http://www.python.org/">Python</a> version 2.6, 2.7, or 3.2+ to work except for Windows exe.</p>
 
-<p><a href="https://yt-dl.org/downloads/2018.12.17/youtube-dl.exe">Windows exe</a> requires <a href="https://www.microsoft.com/en-US/download/details.aspx?id=5555">Microsoft Visual C++ 2010 Redistributable Package (x86)</a> and does not require Python that is already embedded into the binary.</p>
+<p><a href="https://yt-dl.org/downloads/2018.12.31/youtube-dl.exe">Windows exe</a> requires <a href="https://www.microsoft.com/en-US/download/details.aspx?id=5555">Microsoft Visual C++ 2010 Redistributable Package (x86)</a> and does not require Python that is already embedded into the binary.</p>
 
-<h2><a href="https://yt-dl.org/downloads/2018.12.17/youtube-dl">2018.12.17</a> (<a href="https://yt-dl.org/downloads/2018.12.17/youtube-dl.sig">sig</a>)</h2>
+<h2><a href="https://yt-dl.org/downloads/2018.12.31/youtube-dl">2018.12.31</a> (<a href="https://yt-dl.org/downloads/2018.12.31/youtube-dl.sig">sig</a>)</h2>
 
-<p><strong>SHA256</strong>: c778a933f1b674107e274b4066031405ad6ceeae20461be98e54ff0eb7fa8311</p>
+<p><strong>SHA256</strong>: 5975808b4ae6d732b0daf6b19ab0fe1024bf7f02ec4e2155fac899f6dc38bbff</p>
 
 <p>
-	<a href="https://yt-dl.org/downloads/2018.12.17/youtube-dl.exe">Windows exe</a> (<a href="https://yt-dl.org/downloads/2018.12.17/youtube-dl.exe.sig">sig</a> - SHA256 9033458baa9a166ff30e368df66b2d6e79062b337e6f02a55590c0c961b5aa5e)<br>
-	<a href="https://yt-dl.org/downloads/2018.12.17/youtube-dl-2018.12.17.tar.gz">Full source + docs + binary tarball</a> (<a href="https://yt-dl.org/downloads/2018.12.17/youtube-dl-2018.12.17.tar.gz.sig">sig</a> - SHA256 33eb88869637a6f019252348ef470042d5bf1ee3a996736aa3bb8cc647fea4d9)
+	<a href="https://yt-dl.org/downloads/2018.12.31/youtube-dl.exe">Windows exe</a> (<a href="https://yt-dl.org/downloads/2018.12.31/youtube-dl.exe.sig">sig</a> - SHA256 8ef6523325796508cb904c54105f4b400f23504c3a35687b4d2620d6e5727c76)<br>
+	<a href="https://yt-dl.org/downloads/2018.12.31/youtube-dl-2018.12.31.tar.gz">Full source + docs + binary tarball</a> (<a href="https://yt-dl.org/downloads/2018.12.31/youtube-dl-2018.12.31.tar.gz.sig">sig</a> - SHA256 0f1f914277d8568ed43a055565655b110aee20e625f3039c4f2f0d095b3d25e3)
 </p>
 
 <p>To install it right away for all UNIX users (Linux, OS X, etc.), type:
@@ -71,7 +71,7 @@ See the <a href="https://pypi.python.org/pypi/youtube_dl">pypi page</a> for more
 <img alt="Creative Commons License" style="border-width:0"
 src="https://i.creativecommons.org/l/by-sa/3.0/80x15.png" /></a><br />
 Copyright © 2006-2011 Ricardo Garcia Gonzalez<br />
-Copyright © 2011-2018 youtube-dl developers
+Copyright © 2011-2019 youtube-dl developers
 </div>
 </body>
 </html>
diff --git a/download.html.in b/download.html.in
index 5bb1a1862..03bcc9f29 100644
--- a/download.html.in
+++ b/download.html.in
@@ -71,7 +71,7 @@ See the <a href="https://pypi.python.org/pypi/youtube_dl">pypi page</a> for more
 <img alt="Creative Commons License" style="border-width:0"
 src="https://i.creativecommons.org/l/by-sa/3.0/80x15.png" /></a><br />
 Copyright © 2006-2011 Ricardo Garcia Gonzalez<br />
-Copyright © 2011-2018 youtube-dl developers
+Copyright © 2011-2019 youtube-dl developers
 </div>
 </body>
 </html>
diff --git a/index.html b/index.html
index b745958c7..090ccf568 100644
--- a/index.html
+++ b/index.html
@@ -33,7 +33,7 @@
 <img alt="Creative Commons License" style="border-width:0"
 src="https://i.creativecommons.org/l/by-sa/3.0/80x15.png" /></a><br />
 Copyright © 2006-2011 Ricardo Garcia Gonzalez<br />
-Copyright © 2011-2018 youtube-dl developers
+Copyright © 2011-2019 youtube-dl developers
 </div>
 </body>
 </html>
diff --git a/supportedsites.html b/supportedsites.html
index 95b6803fb..8e950eb2d 100644
--- a/supportedsites.html
+++ b/supportedsites.html
@@ -453,6 +453,7 @@
 	<li><b>Lecture2Go</b></li>
 	<li><b>Lecturio</b></li>
 	<li><b>LecturioCourse</b></li>
+	<li><b>LecturioDeCourse</b></li>
 	<li><b>LEGO</b></li>
 	<li><b>Lemonde</b></li>
 	<li><b>Lenta</b></li>
@@ -1171,7 +1172,7 @@
 <img alt="Creative Commons License" style="border-width:0"
 src="https://i.creativecommons.org/l/by-sa/3.0/80x15.png" /></a><br />
 Copyright © 2006-2011 Ricardo Garcia Gonzalez<br />
-Copyright © 2011-2018 youtube-dl developers
+Copyright © 2011-2019 youtube-dl developers
 </div>
 </body>
 </html>
diff --git a/supportedsites.html.in b/supportedsites.html.in
index e866df971..f7138c13b 100644
--- a/supportedsites.html.in
+++ b/supportedsites.html.in
@@ -22,7 +22,7 @@
 <img alt="Creative Commons License" style="border-width:0"
 src="https://i.creativecommons.org/l/by-sa/3.0/80x15.png" /></a><br />
 Copyright © 2006-2011 Ricardo Garcia Gonzalez<br />
-Copyright © 2011-2018 youtube-dl developers
+Copyright © 2011-2019 youtube-dl developers
 </div>
 </body>
 </html>
diff --git a/update/LATEST_VERSION b/update/LATEST_VERSION
index 6663f3908..76950781d 100644
--- a/update/LATEST_VERSION
+++ b/update/LATEST_VERSION
@@ -1 +1 @@
-2018.12.17
\ No newline at end of file
+2018.12.31
\ No newline at end of file
diff --git a/update/releases.atom b/update/releases.atom
index 798b6d7e5..7b2c9c017 100644
--- a/update/releases.atom
+++ b/update/releases.atom
@@ -3,7 +3,7 @@
     <link rel="self" href="http://rg3.github.io/youtube-dl/update/releases.atom" />
     <title>youtube-dl releases</title>
     <id>https://yt-dl.org/feed/youtube-dl-updates-feed</id>
-    <updated>2018-12-17T05:39:46.165271Z</updated>
+    <updated>2019-01-01T00:02:00.542810Z</updated>
     
 	<entry>
 	    <id>https://yt-dl.org/feed/youtube-dl-updates-feed/youtube-dl-2012.02.22</id>
@@ -13145,4 +13145,19 @@
 	    <updated>2018-12-17T00:00:00Z</updated>
 	</entry>
 
+	<entry>
+	    <id>https://yt-dl.org/feed/youtube-dl-updates-feed/youtube-dl-2018.12.31</id>
+	    <title>New version 2018.12.31</title>
+	    <link href="http://rg3.github.io/youtube-dl" />
+	    <content type="xhtml">
+	        <div xmlns="http://www.w3.org/1999/xhtml">
+	            Downloads available at <a href="https://yt-dl.org/downloads/2018.12.31/">https://yt-dl.org/downloads/2018.12.31/</a>
+	        </div>
+	    </content>
+	    <author>
+	        <name>The youtube-dl maintainers</name>
+	    </author>
+	    <updated>2018-12-31T00:00:00Z</updated>
+	</entry>
+
 </feed>
\ No newline at end of file
diff --git a/update/versions.json b/update/versions.json
index 5cd6c8522..58da48576 100644
--- a/update/versions.json
+++ b/update/versions.json
@@ -1,6 +1,6 @@
 {
-    "latest": "2018.12.17",
-    "signature": "1a43ee91f965704e1335efdf7b440772aa82b2c487ab75d5cc61fd0de5e1f56eade09ef8d4e352cbcc27e6e1a5d9aec0e485c34f170f3c32404a52aa89dd51d9edce02ceeb3baba74d79888861651b720bd3541c5389bb261cecf62cb117c54f0f57a13f81a6d1d2fdd69e0809c32c896e7f36471245ebe7e072b15ccc64f8d5",
+    "latest": "2018.12.31",
+    "signature": "1255786951ddaf432e21060f1e46a6da1ef67dbf224ead41d7a26d5b65e3b8c2cc12b9d9222d7387900c7798b6475ee6bef7e28bd48c7559a965279cc334e48536a8295ebea4fa2d2a87d2dfee601dfda103ef59aae09fcd40b70a2a29a047337b7c952ef73f1592bd04ff1579c24c60a86177575aa5153296695a46a359db1b",
     "versions": {
         "2012.02.22": {
             "bin": [
@@ -12271,6 +12271,20 @@
                 "https://yt-dl.org/downloads/2018.12.17/youtube-dl-2018.12.17.tar.gz",
                 "33eb88869637a6f019252348ef470042d5bf1ee3a996736aa3bb8cc647fea4d9"
             ]
+        },
+        "2018.12.31": {
+            "bin": [
+                "https://yt-dl.org/downloads/2018.12.31/youtube-dl",
+                "5975808b4ae6d732b0daf6b19ab0fe1024bf7f02ec4e2155fac899f6dc38bbff"
+            ],
+            "exe": [
+                "https://yt-dl.org/downloads/2018.12.31/youtube-dl.exe",
+                "8ef6523325796508cb904c54105f4b400f23504c3a35687b4d2620d6e5727c76"
+            ],
+            "tar": [
+                "https://yt-dl.org/downloads/2018.12.31/youtube-dl-2018.12.31.tar.gz",
+                "0f1f914277d8568ed43a055565655b110aee20e625f3039c4f2f0d095b3d25e3"
+            ]
         }
     }
 }
\ No newline at end of file