diff --git a/entity_linkage/normalization/sgtb/requirements.txt b/entity_linkage/normalization/sgtb/requirements.txt
index d5d7703d..93993d91 100644
--- a/entity_linkage/normalization/sgtb/requirements.txt
+++ b/entity_linkage/normalization/sgtb/requirements.txt
@@ -21,7 +21,7 @@ botocore==1.9.11
 Bottleneck==1.2.1
 cachetools==3.0.0
 cement==2.8.2
-certifi==2019.3.9
+certifi==2022.12.7
 cffi==1.10.0
 chardet==3.0.4
 click==6.7