diff --git a/DESCRIPTION b/DESCRIPTION
index f62fff49383167024761eb0b76f5f7f0670e788b..808893fde8969f6bec2ac3e93bf6bac4755241a1 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -17,7 +17,7 @@ Imports: methods
 Suggests: glpkAPI (>= 1.2.8), cplexAPI (>= 1.2.4), clpAPI (>= 1.2.4),
         lpSolveAPI (>= 5.5.2.0), parallel, grid
 URL:
-        http://www.cs.hhu.de/en/research-groups/bioinformatics/software/sybil.html
+        http://www.cs.hhu.de/lehrstuehle-und-arbeitsgruppen/computational-cell-biology/software/sybil.html
 Description: This Systems Biology Library for R implements algorithms for constraint based analyses of metabolic networks (e.g. flux-balance analysis (FBA), minimization of metabolic adjustment (MOMA), regulatory on/off minimization (ROOM), robustness analysis and flux variability analysis). Most of the current LP/MILP solvers are supported via additional packages.
 LazyLoad: yes
 License: GPL-3 | file LICENSE
diff --git a/README.md b/README.md
index 4ddeacb919d4d63e2363c1a50ba2997f98a59168..bb19a17ffc045e2956ae64704e9d4b691379d8cb 100644
--- a/README.md
+++ b/README.md
@@ -5,4 +5,4 @@ The package sybil is a Systems Biology Library for R, implementing algorithms fo
 Please consider downloading and installing the package via the R internal package management:
 `install.packages("sybil")`
 
-Alternatively you can visit the [CRAN pakage website](http://cran.r-project.org/package=sybil).
+Alternatively you can visit the [CRAN pakage website](https://CRAN.R-project.org/package=sybil).
diff --git a/inst/NEWS.Rd b/inst/NEWS.Rd
index ad994a13064b08be28cccc42414a6bea5794904b..98d58db31ae3b7b3a9caacf4d92350e951d5581e 100644
--- a/inst/NEWS.Rd
+++ b/inst/NEWS.Rd
@@ -4,7 +4,7 @@
 \title{sybil News}
 \encoding{UTF-8}
 
-\newcommand{\CRANpkg}{\href{http://CRAN.R-project.org/package=#1}{\pkg{#1}}}
+\newcommand{\CRANpkg}{\href{https://CRAN.R-project.org/package=#1}{\pkg{#1}}}
 
 \section{Changes in version 2.0.3 2017-07-12}{
   \itemize{