diff --git a/content/dirac/_index.md b/content/dirac/_index.md
index e76c400..76b3411 100644
--- a/content/dirac/_index.md
+++ b/content/dirac/_index.md
@@ -4,7 +4,7 @@ date: 2020-07-09T17:50:53+02:00
 draft: false
 ---
 
-Web page : http://www.diracprogram.org
+Web page : https://www.diracprogram.org
 
 DIRAC: Program for Atomic and Molecular Direct Iterative Relativistic All-electron Calculations
 
@@ -12,7 +12,7 @@ The DIRAC program computes molecular properties using relativistic quantum chemi
 
 ## Download
 
-The latest version can be downloaded [here](http://www.diracprogram.org/).
+The latest version can be downloaded [here](https://www.diracprogram.org/).
 
 ## People involved now
  - Timo Fleig
@@ -21,5 +21,5 @@ The latest version can be downloaded [here](http://www.diracprogram.org/).
 
 ## Citation
 
-http://www.diracprogram.org/doku.php?id=citation
+https://www.diracprogram.org/doku.php?id=citation