diff --git a/irri_reqs.txt b/irri_reqs.txt
index 1d9821f..45b7f7f 100644
--- a/irri_reqs.txt
+++ b/irri_reqs.txt
@@ -6,7 +6,7 @@ beautifulsoup4==4.6.3
 bleach==3.1.4
 bounds==0.0.1
 bs4==0.0.1
-certifi==2018.8.24
+certifi==2022.12.7
 cftime==1.0.1
 chardet==3.0.4
 click==6.7
diff --git a/metstat_reqs.txt b/metstat_reqs.txt
index 1986e29..c47e97e 100644
--- a/metstat_reqs.txt
+++ b/metstat_reqs.txt
@@ -4,7 +4,7 @@ beautifulsoup4==4.6.0
 boto3==1.7.30
 botocore==1.10.30
 bs4==0.0.1
-certifi==2018.4.16
+certifi==2022.12.7
 cftime==1.0.0
 chardet==3.0.4
 click==6.7
diff --git a/requirements.txt b/requirements.txt
index 49c7542..b4382a7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ affine==2.2.0
 astor==0.6.2
 attrs==18.1.0
 bleach==3.1.4
-certifi==2018.4.16
+certifi==2022.12.7
 chardet==3.0.4
 click==6.7
 click-plugins==1.0.3