diff --git a/FFmpegSource/ffmpegsource.html b/FFmpegSource/ffmpegsource.html
index 7a1f20059..1b40fe095 100644
--- a/FFmpegSource/ffmpegsource.html
+++ b/FFmpegSource/ffmpegsource.html
@@ -184,6 +184,14 @@ Note that --enable-w32threads is required for multithreaded decoding to work.
 
 <h2>Changes</h2>
 <ul>
+<li>1.21<ul>
+<li>Updated FFmpeg to rev 14845 (No more avi opening issues)</li>
+</ul></li>
+
+<li>1.20<ul>
+<li>Updated FFmpeg to rev 14461</li>
+</ul></li>
+
 <li>1.19<ul>
 <li>Now automatically detects the number of cpus and uses it as the default for the number of decoding threads</li>
 <li>Added SWScale filter which can perform colorspace conversions and resizing and has many different resizers to choose from</li>