diff --git a/hakyll-bootstrap/Makefile b/hakyll-bootstrap/Makefile
index 1e4e8d1871d6049bfcd58f9b8c2346ddcdc3be14..41d3add408ec55b35b7491b1a2c9a720d384b0d9 100644
--- a/hakyll-bootstrap/Makefile
+++ b/hakyll-bootstrap/Makefile
@@ -10,6 +10,7 @@ build: Main.hs cours/math_tech_info/*.md cours/isc_physics/*.md
 	make -C cours/math_tech_info
 	make -C cours/isc_physics
 	make markdown -C cours/prog_seq/slides
+	make markdown -C cours/algo/slides
 	stack build --allow-different-user && stack exec --allow-different-user blog -- build
 	# cabal install && blog build
 	# stack build && stack exec blog -- build