diff --git a/static/tour/material/Cantor_Zoom_Speech.mp4 b/static/tour/material/Cantor_Zoom_Speech.mp4
index 056f5163..9f275219 100644
--- a/static/tour/material/Cantor_Zoom_Speech.mp4
+++ b/static/tour/material/Cantor_Zoom_Speech.mp4
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
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-size 24433353
+oid sha256:5e40d03a7ea9583badb55c1235f58b17391c1c3073d0c7987740d1ba89ad5018
+size 21165757