diff --git a/Makefile b/Makefile
index db732a2..9d3125b 100644
--- a/Makefile
+++ b/Makefile
@@ -26,7 +26,7 @@ SCORESDIR = $(SRCDIR)/scores
 LYRICSDIR = $(SRCDIR)/lyrics
 
 OUTPUTFILE = $(OUTDIR)/singalongs.tex
-
+TEXFILES = $(wildcard $(SRCDIR)/*.tex)
 SCORES = $(wildcard $(SCORESDIR)/*.ly)
 LYRICS = $(wildcard $(LYRICSDIR)/*.tex)
 PDFS = $(patsubst %.ly,$(PDFDIR)/%.pdf,$(notdir $(SCORES)))
@@ -52,8 +52,8 @@ book: $(BOOKPDF)
 
 booklet: $(BOOKLETPDF)
 
-$(BOOKPDF): | $(PDFDIR) $(OUTDIR)
-	@$(CP) $(SRCDIR)/*.tex $(OUTDIR)/
+$(BOOKPDF): $(TEXFILES) $(SCORES) $(LYRICS) | $(PDFDIR) $(OUTDIR)
+	@$(CP) $(TEXFILES) $(OUTDIR)/
 	@$(CP) -r lib/* $(OUTDIR)/
 	@$(CP) -r $(SRCDIR)/images $(OUTDIR)/images