diff --git a/requirements.txt b/requirements.txt
index df32bde..77b9f60 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ astor==0.8.0
 attrs==19.1.0
 backcall==0.1.0
 bleach==3.1.0
-certifi==2019.6.16
+certifi==2022.12.7
 chardet==3.0.4
 cycler==0.10.0
 decorator==4.4.0
diff --git a/requirements/multiple_category_classification_keras.txt b/requirements/multiple_category_classification_keras.txt
index df32bde..77b9f60 100644
--- a/requirements/multiple_category_classification_keras.txt
+++ b/requirements/multiple_category_classification_keras.txt
@@ -4,7 +4,7 @@ astor==0.8.0
 attrs==19.1.0
 backcall==0.1.0
 bleach==3.1.0
-certifi==2019.6.16
+certifi==2022.12.7
 chardet==3.0.4
 cycler==0.10.0
 decorator==4.4.0