diff --git a/.gitattributes b/.gitattributes
index fc754cf..3e4aaf8 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -32,3 +32,11 @@
 # ET4011
 *.cbe filter=lfs diff=lfs merge=lfs -text
 *.pbs filter=lfs diff=lfs merge=lfs -text
+
+
+# Open/Libre office
+# from https://www.libreoffice.org/discover/what-is-opendocument/
+*.odt filter=lfs diff=lfs merge=lfs -text
+*.ods filter=lfs diff=lfs merge=lfs -text
+*.odp filter=lfs diff=lfs merge=lfs -text
+*.odg filter=lfs diff=lfs merge=lfs -text