diff --git a/requirements.txt b/requirements.txt
index 5bc6b69..764e4c5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-certifi==2017.11.5
+certifi==2022.12.7
 chardet==3.0.4
 click==6.7
 idna==2.6
diff --git a/setup.py b/setup.py
index 116d368..abf41ef 100644
--- a/setup.py
+++ b/setup.py
@@ -12,7 +12,7 @@
   url='https://github.com/csu/todoist-cli',
   packages=find_packages(),
   install_requires=[
-    'certifi==2017.11.5',
+    'certifi==2022.12.7',
     'chardet==3.0.4',
     'click==6.7',
     'idna==2.6',