diff --git a/extensions/vp9/README.md b/extensions/vp9/README.md
index 1377f74f2a..03d9b7413d 100644
--- a/extensions/vp9/README.md
+++ b/extensions/vp9/README.md
@@ -29,7 +29,7 @@ VP9_EXT_PATH="${EXOPLAYER_ROOT}/extensions/vp9/src/main"
 ```
 
 * Download the [Android NDK][] and set its location in an environment variable.
-  The build configuration has been tested with Android NDK r19c.
+  This build configuration has been tested on NDK r20.
 
 ```
 NDK_PATH="<path to Android NDK>"