diff --git a/thc-net/pyproject.toml b/thc-net/pyproject.toml
index 67a4beb..8215ad1 100755
--- a/thc-net/pyproject.toml
+++ b/thc-net/pyproject.toml
@@ -12,7 +12,7 @@ scikit-learn = "0.23.1"
 
 [tool.poetry.dev-dependencies]
 pytest = "5.4.3"
-notebook = "6.0.3"
+notebook = "6.5.7"
 ipywidgets = "7.5.1"
 requests = "2.23.0"
 matplotlib = "3.2.1"