diff --git a/Makefile b/Makefile
index b4ae4b2..75ba2cf 100644
--- a/Makefile
+++ b/Makefile
@@ -1,9 +1,11 @@
 OUT_DIR := out
 GRAPHS_DIR := graphs
 CONTENTS_DIR := contents
+PACKAGES_DIR := packages
 REFERENCES_DIR := references
 
-CONTENTS := $(wildcard $(CONTENTS)/*.tex)
+CONTENTS := $(wildcard $(CONTENTS_DIR)/*.tex)
+PACKAGES := $(wildcard $(PACKAGES_DIR)/*.sty)
 REFERENCES := $(wildcard $(REFERENCES_DIR)/*.bib)
 GRAPHS := $(wildcard $(GRAPHS_DIR)/*.gv)
 GRAPHS_IMG := $(GRAPHS:$(GRAPHS_DIR)/%.gv=$(OUT_DIR)/%.gv.png)
@@ -29,11 +31,12 @@ references: $(REFERENCES)
 	bibtex $(OUT_DIR)/annexes
 	bibtex $(OUT_DIR)/references
 
---inner_pdf:
+.PHONY: --inner_pdf
+--inner_pdf: $(CONTENTS) $(PACKAGES) $(REFERENCES) $(GRAPHS)
 	pdflatex -output-directory $(OUT_DIR) main.tex
 
 .PHONY: pdf
-pdf: $(GRAPHS_IMG) --inner_pdf references index --inner_pdf
+pdf: $(GRAPHS_IMG) --inner_pdf references index --inner_pdf references --inner_pdf
 
 .PHONY: preview
 preview: pdf