diff --git a/Alpha_shapes_2/doc_tex/Alpha_shapes_2/PkgDescription.tex b/Alpha_shapes_2/doc_tex/Alpha_shapes_2/PkgDescription.tex
index 9d9d2297124..be00cd3f461 100644
--- a/Alpha_shapes_2/doc_tex/Alpha_shapes_2/PkgDescription.tex
+++ b/Alpha_shapes_2/doc_tex/Alpha_shapes_2/PkgDescription.tex
@@ -9,6 +9,6 @@ alpha values and a filtration on the triangulation faces (this filtration is bas
 alpha value for which each face is included on the alpha-complex).}
 
 \ccPkgDependsOn{\ccRef[2D Triangulation]{Pkg:Triangulation2}}
-\ccPkgIntroducedInCGAL{2.4}
+\ccPkgIntroducedInCGAL{2.1}
 \ccPkgLicense{\ccLicenseQPL}
 \end{ccPkgDescription}