diff --git a/requirements.txt b/requirements.txt
index 3d0f1ca..a9784ff 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 aniso8601==4.1.0
 cachetools==3.1.0
-certifi==2019.3.9
+certifi==2022.12.7
 chardet==3.0.4
 Click==7.0
 confuse==0.5.0
diff --git a/requirements_docs.txt b/requirements_docs.txt
index 1cb7850..b5bb536 100644
--- a/requirements_docs.txt
+++ b/requirements_docs.txt
@@ -2,7 +2,7 @@ alabaster==0.7.12
 aniso8601==4.1.0
 Babel==2.6.0
 cachetools==3.1.0
-certifi==2019.3.9
+certifi==2022.12.7
 chardet==3.0.4
 Click==7.0
 confuse==0.5.0
diff --git a/requirements_test.txt b/requirements_test.txt
index 5120ebc..210ba25 100644
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -2,7 +2,7 @@ aniso8601==4.1.0
 atomicwrites==1.3.0
 attrs==19.1.0
 cachetools==3.1.0
-certifi==2019.3.9
+certifi==2022.12.7
 chardet==3.0.4
 Click==7.0
 confuse==0.5.0