diff --git a/NOTEBOOKS/requirements_cleaning_eda.txt b/NOTEBOOKS/requirements_cleaning_eda.txt
index c5f0493..2c1d914 100644
--- a/NOTEBOOKS/requirements_cleaning_eda.txt
+++ b/NOTEBOOKS/requirements_cleaning_eda.txt
@@ -200,7 +200,7 @@ nbconvert==5.6.1
 nbformat==5.0.7
 networkx==2.4
 nibabel==3.0.2
-nltk==3.2.5
+nltk==3.4.5
 notebook==5.3.1
 np-utils==0.5.12.1
 numba==0.48.0
diff --git a/NOTEBOOKS/requirements_modelling.txt b/NOTEBOOKS/requirements_modelling.txt
index 4dffd10..f11fd88 100644
--- a/NOTEBOOKS/requirements_modelling.txt
+++ b/NOTEBOOKS/requirements_modelling.txt
@@ -200,7 +200,7 @@ nbconvert==5.6.1
 nbformat==5.0.7
 networkx==2.4
 nibabel==3.0.2
-nltk==3.2.5
+nltk==3.4.5
 notebook==5.3.1
 np-utils==0.5.12.1
 numba==0.48.0