diff --git a/Credibility/Types/TruncatedNormal.mo b/Credibility/Types/TruncatedNormal.mo
index 0a3daa8..769b9dd 100644
--- a/Credibility/Types/TruncatedNormal.mo
+++ b/Credibility/Types/TruncatedNormal.mo
@@ -55,9 +55,9 @@ The Modelica Standard Library provides
 <a href=\"modelica://Modelica.Math.Distributions.TruncatedNormal\">Modelica.Math.Distributions.TruncatedNormal</a>.
 For more details of the normal distribution or of truncated distributions, see
 Wikipedia &ndash;
-<a href=\"http://en.wikipedia.org/wiki/Normal_distribution\">normal distribution</a>
+<a href=\"https://en.wikipedia.org/wiki/Normal_distribution\">normal distribution</a>
 or
-<a href=\"http://en.wikipedia.org/wiki/Truncated_distribution\">truncated distribution</a>,
+<a href=\"https://en.wikipedia.org/wiki/Truncated_distribution\">truncated distribution</a>,
 respectively.
 </p>
 </html>"));