diff --git a/docs/doc_header.md b/docs/doc_header.md
index 7953d4d..d94c2a5 100644
--- a/docs/doc_header.md
+++ b/docs/doc_header.md
@@ -9,7 +9,9 @@ geometry: "left=2cm,right=2cm,top=2cm,bottom=2.5cm"
 fontsize: 14pt
 mainfont: Latin Modern Sans
 header-includes:
-- \hypersetup{{colorlinks=false,
+- \hypersetup{{colorlinks=true,
+          urlcolor=blue,
+          linkcolor=[rgb]{{0,0,0.5}},
           allbordercolors={{0 0 0}},
           pdfborderstyle={{/S/U/W 1}}}}
 ---