diff --git a/changelog.txt b/changelog.txt
index e886a4b..a38d432 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -5,7 +5,8 @@ Version 0.2.9 (2018-06-)
 - Cosmetic fix for scaled viewports @danielperna84
 - Added search-function for entities (Issue #99) @danielperna84
 - Updated Ace Editor to 1.3.3
-- Updates jQuery to 3.3.1
+- Updated jQuery to 3.3.1
+- Updated js-yaml to 3.12.0
 
 Version 0.2.8 (2018-04-23)
 - Updated CDN libraries @jmart518
diff --git a/configurator.py b/configurator.py
index a22e069..689b6fa 100755
--- a/configurator.py
+++ b/configurator.py
@@ -3291,7 +3291,7 @@ INDEX = Template(r"""<!DOCTYPE html>
     }
 
 </script>
-<script src="https://cdnjs.cloudflare.com/ajax/libs/js-yaml/3.10.0/js-yaml.js" type="text/javascript" charset="utf-8"></script>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/js-yaml/3.12.0/js-yaml.js" type="text/javascript" charset="utf-8"></script>
 <script type="text/javascript">
 var lint_timeout;
 var lint_status = $('#lint-status'); // speed optimization
diff --git a/dev.html b/dev.html
index e3cdbc6..9885afc 100644
--- a/dev.html
+++ b/dev.html
@@ -3201,7 +3201,7 @@
     }
 
 </script>
-<script src="https://cdnjs.cloudflare.com/ajax/libs/js-yaml/3.10.0/js-yaml.js" type="text/javascript" charset="utf-8"></script>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/js-yaml/3.12.0/js-yaml.js" type="text/javascript" charset="utf-8"></script>
 <script type="text/javascript">
 var lint_timeout;
 var lint_status = $('#lint-status'); // speed optimization
