diff --git a/relation-extraction/biobert_RE_chemprot/models/pt/drugprot_evln/requirements.txt b/relation-extraction/biobert_RE_chemprot/models/pt/drugprot_evln/requirements.txt
index 86299ca..b83770c 100644
--- a/relation-extraction/biobert_RE_chemprot/models/pt/drugprot_evln/requirements.txt
+++ b/relation-extraction/biobert_RE_chemprot/models/pt/drugprot_evln/requirements.txt
@@ -2,7 +2,7 @@ certifi==2019.9.11
 joblib==1.0.1
 numpy==1.20.2
 pandas==1.2.4
-pipenv==2018.11.26
+pipenv==2022.1.8
 python-dateutil==2.8.1
 pytz==2021.1
 scikit-learn==0.24.2