diff --git a/Makefile b/Makefile
index e1073d63a36cbed28f2fbf847f262cd1a245759d..b1a286ea98b3e19804f4941970c4ca376451841c 100644
--- a/Makefile
+++ b/Makefile
@@ -23,6 +23,7 @@ all:  cours.pdf cours.html
 # 	pandoc -s $(OPTIONS) $(PDFOPTIONS) -o $@ $<
 
 cours.pdf: $(CLASS_SOURCES)
+	pandoc -v
 	pandoc -s $(OPTIONS) $(PDFOPTIONS) -o $@ $^ --metadata-file metadata.yaml
 
 cours.html: $(CLASS_SOURCES)