diff --git a/dev/requirements_old.txt b/dev/requirements_old.txt
index 09761645e..625dc686c 100644
--- a/dev/requirements_old.txt
+++ b/dev/requirements_old.txt
@@ -5,7 +5,7 @@ astropy==3.2.1
 astroquery==0.3.10
 backcall==0.1.0
 beautifulsoup4==4.8.1
-certifi==2019.9.11
+certifi==2022.12.7
 cffi==1.12.3
 chardet==3.0.4
 cloudpickle==1.2.2
diff --git a/requirements.txt b/requirements.txt
index e27a454ee..09b5b30a6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ astroquery==0.3.10
 backcall==0.1.0
 beautifulsoup4==4.8.1
 cachetools==4.0.0
-certifi==2019.11.28
+certifi==2022.12.7
 cffi==1.12.3
 chardet==3.0.4
 cloudpickle==1.2.2
diff --git a/src/requirements.txt b/src/requirements.txt
index e27a454ee..09b5b30a6 100644
--- a/src/requirements.txt
+++ b/src/requirements.txt
@@ -6,7 +6,7 @@ astroquery==0.3.10
 backcall==0.1.0
 beautifulsoup4==4.8.1
 cachetools==4.0.0
-certifi==2019.11.28
+certifi==2022.12.7
 cffi==1.12.3
 chardet==3.0.4
 cloudpickle==1.2.2