diff --git a/Envelope_3/doc_tex/Envelope_3/PkgDescription.tex b/Envelope_3/doc_tex/Envelope_3/PkgDescription.tex
index 4d4720c7cb7..676d2d991de 100644
--- a/Envelope_3/doc_tex/Envelope_3/PkgDescription.tex
+++ b/Envelope_3/doc_tex/Envelope_3/PkgDescription.tex
@@ -11,5 +11,6 @@ each diagram cell is unique.}
 \ccPkgIntroducedInCGAL{3.3}
 \ccPkgLicense{\ccLicenseQPL}
 \ccPkgDemo{3D Envelopes}{envelope_3.zip}
+\ccPkgDemo{L1 Voronoi Diagram}{l1_voronoi_diagram_2.zip}
 \ccPkgIllustration{Envelope_3/fig/Envelope_3.png}{Envelope_3/fig/Envelope_3.png}
 \end{ccPkgDescription}