diff --git a/_posts/2017-09-18-MISP.2.4.80.released.md b/_posts/2017-09-18-MISP.2.4.80.released.md
index c8842c4..2cbd5d5 100755
--- a/_posts/2017-09-18-MISP.2.4.80.released.md
+++ b/_posts/2017-09-18-MISP.2.4.80.released.md
@@ -28,6 +28,8 @@ Version 2.4.80 also includes an extended file import for binaries relying on [Py
 
 We are expecting to see many creative uses of the new MISP object feature and improvements in the following weeks.
 
+If you upgrade from an existing version of MISP, don't forget to do a `git submodule init && git submodule update` (or use the update in the UI) and restart the workers.
+
 This release includes many bug fixes, improvements and new features.
 
 The full change log is available [here](https://www.misp.software/Changelog.txt). [PyMISP change log](https://www.misp.software/PyMISP-Changelog.txt) is also available.