diff --git a/Introduction-to-Pandas--slides.pdf b/Introduction-to-Pandas--slides.pdf
index 70317d9c9fe1b145beb9fb945bd6e9b3afee41a7..85397d09318bde601e2087101a0267b852b86659 100644
Binary files a/Introduction-to-Pandas--slides.pdf and b/Introduction-to-Pandas--slides.pdf differ
diff --git a/Makefile b/Makefile
index dbaedb970deca4026780f30ed53b7cf41da2c2fe..62397f2d8b08ddd94732553e3d3c1d4e5eec26e2 100644
--- a/Makefile
+++ b/Makefile
@@ -18,7 +18,7 @@ subnotebooks: $(SUBNOTEBOOKS)
 	> $@
 
 %.pdf: %.html $(DEP_PRESENTATION)
-	decktape reveal $< $@
+	decktape --size "1280x720" reveal $< $@
 
 Introduction-to-Pandas--slides.ipynb: $(MASTER_NOTEBOOK)
 	./notebook-task-filter.py $< --keep task --keep solution --keep onlypresentation --remove onlytask --remove onlysolution --remove nopresentation -o $@