diff --git a/hakyll-bootstrap/cours/isc_physics b/hakyll-bootstrap/cours/isc_physics
index f7cce04fd3823928781f30e8c5d497acfafde470..322ca78adce71a43e99fd0758a8d8e084c2b7f64 160000
--- a/hakyll-bootstrap/cours/isc_physics
+++ b/hakyll-bootstrap/cours/isc_physics
@@ -1 +1 @@
-Subproject commit f7cce04fd3823928781f30e8c5d497acfafde470
+Subproject commit 322ca78adce71a43e99fd0758a8d8e084c2b7f64
diff --git a/hakyll-bootstrap/cours/math_tech_info b/hakyll-bootstrap/cours/math_tech_info
index 3aafd78cea2c62a348bb82ea9542be6ff0bdff7e..abce8a316d280446d6169fe8bd7d0ce2320d1120 160000
--- a/hakyll-bootstrap/cours/math_tech_info
+++ b/hakyll-bootstrap/cours/math_tech_info
@@ -1 +1 @@
-Subproject commit 3aafd78cea2c62a348bb82ea9542be6ff0bdff7e
+Subproject commit abce8a316d280446d6169fe8bd7d0ce2320d1120
diff --git a/hakyll-bootstrap/cours/prog_seq b/hakyll-bootstrap/cours/prog_seq
index 94bd5d4d14b8b09d7850b5e5296d17f0c31b565c..63bd36c8e5e66a2b94b2364e4cef57ecc2a2d7a3 160000
--- a/hakyll-bootstrap/cours/prog_seq
+++ b/hakyll-bootstrap/cours/prog_seq
@@ -1 +1 @@
-Subproject commit 94bd5d4d14b8b09d7850b5e5296d17f0c31b565c
+Subproject commit 63bd36c8e5e66a2b94b2364e4cef57ecc2a2d7a3