diff --git a/stats/known_apks.txt b/stats/known_apks.txt
index 46ce0f085b..4751a30a2c 100644
--- a/stats/known_apks.txt
+++ b/stats/known_apks.txt
@@ -1198,6 +1198,7 @@ cx.hell.android.pdfview_40000.apk cx.hell.android.pdfview 2013-04-09
 cxa.lineswallpaper_9.apk cxa.lineswallpaper 2013-01-10
 cz.hejl.chesswalk_7.apk cz.hejl.chesswalk 2012-01-12
 cz.hejl.chesswalk_8.apk cz.hejl.chesswalk 2012-08-29
+cz.hejl.chesswalk_9.apk cz.hejl.chesswalk 2013-11-23
 cz.romario.opensudoku_1104.apk cz.romario.opensudoku 2012-01-12
 cz.romario.opensudoku_1105.apk cz.romario.opensudoku 2012-01-12
 damo.three.ie_8.apk damo.three.ie 2013-08-16