diff --git a/src/Doc/CONTRIBUTORS b/src/Doc/CONTRIBUTORS
index d34c07de08..a196bb16af 100644
--- a/src/Doc/CONTRIBUTORS
+++ b/src/Doc/CONTRIBUTORS
@@ -220,8 +220,9 @@ Zheng Lei (realthunder)
 7ofnine
 
 Firms
-Imetric 3D
-AlephObjects
-KiCad Services Corporation
-OpeningDesign
 3Dconnexion
+AlephObjects
+Imetric 3D
+KiCad Services Corporation
+Ondsel
+OpeningDesign
diff --git a/src/Doc/ThirdPartyLibraries.html b/src/Doc/ThirdPartyLibraries.html
index d9cfd9a6ed..4070828145 100644
--- a/src/Doc/ThirdPartyLibraries.html
+++ b/src/Doc/ThirdPartyLibraries.html
@@ -63,6 +63,13 @@ List of Open Source components<br />
 <p>License: BSD-3-clause: <a href="https://github.com/danielfalck/libarea/blob/master/License.txt">https://github.com/danielfalck/libarea/blob/master/License.txt</a></p>
 
 
+<hr>
+
+<h3><a name="_Ondsel"></a>Ondsel Solver</h3>
+<p>Web site: <a href="https://github.com/Ondsel-Development/OndselSolver">https://github.com/Ondsel-Development/OndselSolver</a></p>
+<p>License: LGPL version 2.1: <a href="#_LGPLv21">LGPL v2.1</a></p>
+
+
 <hr>
 
 <h3><a name="_TocOCCT"></a>Open CASCADE Technology</h3>