diff --git a/src/Hercules.ED.Enrichment/ServicioAPI/requirements.txt b/src/Hercules.ED.Enrichment/ServicioAPI/requirements.txt
index 0accdf842..ebfa85142 100644
--- a/src/Hercules.ED.Enrichment/ServicioAPI/requirements.txt
+++ b/src/Hercules.ED.Enrichment/ServicioAPI/requirements.txt
@@ -3,7 +3,7 @@ flask_restful==0.3.9
 flask_httpauth==4.5.0
 flask_apispec==0.11.0
 langid==1.1.6
-nltk==3.7
+nltk==3.8.1
 pandas==1.3.5
 passlib==1.7.4
 scikit-learn==1.0.2
@@ -13,3 +13,4 @@ spacy==3.2.3
 Unidecode==1.3.4
 git+https://github.com/mattbierbaum/arxiv-public-datasets.git
 https://storage.googleapis.com/elhuyar/Hercules/dependencies/text_classification-0.1.0-py3-none-any.whl
+pydantic>=1.10.13 # not directly required, pinned by Snyk to avoid a vulnerability