diff --git a/open-lessons/decorators.15.02.2022/requirements.txt b/open-lessons/decorators.15.02.2022/requirements.txt
index 1464ed9f..91b21132 100644
--- a/open-lessons/decorators.15.02.2022/requirements.txt
+++ b/open-lessons/decorators.15.02.2022/requirements.txt
@@ -20,7 +20,7 @@ jedi==0.18.1
 Jinja2==3.0.3
 jsonschema==4.4.0
 jupyter-client==7.1.2
-jupyter-core==4.9.1
+jupyter-core==4.11.2
 jupyterlab-pygments==0.1.2
 MarkupSafe==2.0.1
 matplotlib-inline==0.1.3