diff --git a/core/web/html/actions/updates.php b/core/web/html/actions/updates.php
index 7a072a002..74fd32f22 100644
--- a/core/web/html/actions/updates.php
+++ b/core/web/html/actions/updates.php
@@ -80,12 +80,21 @@ header("Content-type: text/plain");
 $version = $_GET["version"];
 $updates = "";
 
-$unstable = "13.09";
+$unstable = "13.09.1";
 $stable = "1.0.0";
 
 
-if (preg_match("/^13.05$/", $version)) {
+if (preg_match("/^13.09$/", $version)) {
   $updates = "Version: " . $unstable . "\n" .
+    "6: New thrustcurves for Aerotech C3 and D2\n" .
+    "4: Updated Translations to Russian\n" .
+    "4: Updated 3D libraries\n" .
+    "4: Bug fixes\n" .
+    "";
+} else if (preg_match("/^13.05$/", $version)) {
+  $updates = "Version: " . $unstable . "\n" .
+    "6: New thrustcurves for Aerotech C3 and D2\n" .
+    "4: Updated Translations to Russian\n" .
     "4: Updated 3D libraries\n" .
     "4: Bug fixes\n" .
     "";
@@ -94,6 +103,7 @@ if (preg_match("/^13.05$/", $version)) {
     "10: Realistic 3D rendering\n" .
     "9: Flight configurations\n" .
     "8: Lower stage simulation\n" .
+    "6: New thrustcurves for Aerotech C3 and D2\n" .
     "5: New translations\n" .
     "4: Bug fixes\n" .
     "";
@@ -103,6 +113,7 @@ if (preg_match("/^13.05$/", $version)) {
     "9: Flight configurations\n" .
     "8: Lower stage simulation\n" .
     "5: New translations\n" .
+    "6: New thrustcurves for Aerotech C3 and D2\n" .
     "4: Bug fixes\n" .
     "";
 } else if (preg_match("/^12.03$/", $version)) {
diff --git a/core/web/html/download.html b/core/web/html/download.html
index 0f5c6c4b9..aa3e779ae 100644
--- a/core/web/html/download.html
+++ b/core/web/html/download.html
@@ -48,6 +48,10 @@
   <div class="content">
 <div class="news">
       <h2>Recent news:</h2>
+  <p><span class="date">6.10.2013:</span> Version 13.09.1 is
+   <a href="download.html">released</a>!  This is a bug-fix release,
+   and includes updated 3D libraries and new thrust curves for
+   Aerotech C3 and D2.</p>
   <p><span class="date">8.9.2013:</span> Version 13.09 is
    <a href="download.html">released</a>!  This release contains
    numerous bug fixes, updated 3D JOGL libraries, and separated
@@ -62,11 +66,6 @@
   <p>Version 13.05 also changes the file format to be ZIP-based.
     Versions earlier than 12.03 will not be able to read files saved
     by this version.</p>
-  <p><span class="date">28.9.2012:</span> Version 12.09.1 is
-   <a href="download.html">released</a>!  This is a bug-fix release,
-   fixing numerous bugs introduced in 12.09.  The only new feature is
-   the option to automatically open the latest design file on startup
-   (in <em>Edit</em> &rarr; <em>Preferences</em> &rarr; <em>Options</em>).
 </div>
     <div class="contentholder">
       <h2>Ready packages</h2>
@@ -87,20 +86,20 @@
         <a href="http://sourceforge.net/donate/index.php?group_id=260357"><img src="project-support.jpg" width="88" height="32" alt="Support This Project" /></a>
       </div>
         <div class="downloadbox">
-    <a class="main" href="https://sourceforge.net/projects/openrocket/files/openrocket/13.09/OpenRocket-13.09.jar/download">
+    <a class="main" href="https://sourceforge.net/projects/openrocket/files/openrocket/13.09.1/OpenRocket-13.09.1.jar/download">
       <strong>Download now!</strong>
-      <span>OpenRocket-13.09.jar</span>
+      <span>OpenRocket-13.09.1.jar</span>
     </a>
     <span class="alternative">
-      <a href="https://sourceforge.net/projects/openrocket/files/openrocket/13.09/ReleaseNotes/view">Release notes</a> |
-            <a href="https://sourceforge.net/projects/openrocket/files/openrocket/13.09/OpenRocket-13.09-src.zip/download">Source code</a>
+      <a href="https://sourceforge.net/projects/openrocket/files/openrocket/13.09.1/ReleaseNotes/view">Release notes</a> |
+            <a href="https://sourceforge.net/projects/openrocket/files/openrocket/13.09.1/OpenRocket-13.09.1-src.zip/download">Source code</a>
     </span>
   </div>
       <p>OpenRocket can be started in most graphical environments (including
 	Windows) by double-clicking the package icon.  No installation is
 	required.</p>
       <p>From the command line OpenRocket can be started by
-      <span class="command">java -jar OpenRocket-13.09.jar</span></p>
+      <span class="command">java -jar OpenRocket-13.09.1.jar</span></p>
       <h3>Android version</h3>
       <p>The Android version allows opening OpenRocket files, viewing
         simulations and motors.  Later versions will allow running
diff --git a/core/web/html/index.html b/core/web/html/index.html
index a2eb92172..b9cc6609b 100644
--- a/core/web/html/index.html
+++ b/core/web/html/index.html
@@ -49,12 +49,12 @@
     <h2>Introduction</h2>
     <div class="rightpane">
         <div class="downloadbox">
-    <a class="main" href="https://sourceforge.net/projects/openrocket/files/openrocket/13.09/OpenRocket-13.09.jar/download">
+    <a class="main" href="https://sourceforge.net/projects/openrocket/files/openrocket/13.09.1/OpenRocket-13.09.1.jar/download">
       <strong>Download now!</strong>
-      <span>OpenRocket-13.09.jar</span>
+      <span>OpenRocket-13.09.1.jar</span>
     </a>
     <span class="alternative">
-      <a href="https://sourceforge.net/projects/openrocket/files/openrocket/13.09/ReleaseNotes/view">Release notes</a> |
+      <a href="https://sourceforge.net/projects/openrocket/files/openrocket/13.09.1/ReleaseNotes/view">Release notes</a> |
             <a href="download.html">Other versions</a>
     </span>
   </div>
@@ -96,6 +96,10 @@
     <div class="clear"></div>
 <div class="news">
       <h2>News</h2>
+  <p><span class="date">6.10.2013:</span> Version 13.09.1 is
+   <a href="download.html">released</a>!  This is a bug-fix release,
+   and includes updated 3D libraries and new thrust curves for
+   Aerotech C3 and D2.</p>
   <p><span class="date">8.9.2013:</span> Version 13.09 is
    <a href="download.html">released</a>!  This release contains
    numerous bug fixes, updated 3D JOGL libraries, and separated
diff --git a/core/web/htp/htp.def b/core/web/htp/htp.def
index 276ce86dc..251d077af 100644
--- a/core/web/htp/htp.def
+++ b/core/web/htp/htp.def
@@ -1,4 +1,4 @@
-<set version="13.09">
+<set version="13.09.1">
 <set androidversion="12.09">
 
 <def name="downloadbox">
diff --git a/core/web/htp/news.htp b/core/web/htp/news.htp
index 0c5ea4eba..0bd844645 100644
--- a/core/web/htp/news.htp
+++ b/core/web/htp/news.htp
@@ -9,6 +9,11 @@
 
   <!--- Remember to move the position of "onlyrecent" below! --->
 
+  <p><span class="date">6.10.2013:</span> Version 13.09.1 is
+   <a href="download.html">released</a>!  This is a bug-fix release,
+   and includes updated 3D libraries and new thrust curves for
+   Aerotech C3 and D2.</p>
+
   <p><span class="date">8.9.2013:</span> Version 13.09 is
    <a href="download.html">released</a>!  This release contains
    numerous bug fixes, updated 3D JOGL libraries, and separated
@@ -26,16 +31,16 @@
     Versions earlier than 12.03 will not be able to read files saved
     by this version.</p>
 
+
+  <if not onlyrecent><!--- Older items not shown on download page:  --->
+
+
   <p><span class="date">28.9.2012:</span> Version 12.09.1 is
    <a href="download.html">released</a>!  This is a bug-fix release,
    fixing numerous bugs introduced in 12.09.  The only new feature is
    the option to automatically open the latest design file on startup
    (in <em>Edit</em> &rarr; <em>Preferences</em> &rarr; <em>Options</em>).
 
-
-  <if not onlyrecent><!--- Older items not shown on download page:  --->
-
-
   <p><span class="date">23.9.2012:</span> Version 12.09 for Android is
    <a href="download.html">released</a>!  The major improvement is the
    possibility to edit simulation parameters, thanks to work by Kevin