diff --git a/vim/en.utf-8.add b/vim/en.utf-8.add
index ba656f8..438a048 100644
--- a/vim/en.utf-8.add
+++ b/vim/en.utf-8.add
@@ -37,3 +37,4 @@ timestamp
 Mixpanel
 Analytica
 Analytica's
+backpropagation
diff --git a/vim/en.utf-8.add.spl b/vim/en.utf-8.add.spl
index 82be465..1d3e74b 100644
Binary files a/vim/en.utf-8.add.spl and b/vim/en.utf-8.add.spl differ