diff --git a/requirements/requirements-macOS-latest-3.9.txt b/requirements/requirements-macOS-latest-3.9.txt
index aeba41ef..5ab2f6a2 100644
--- a/requirements/requirements-macOS-latest-3.9.txt
+++ b/requirements/requirements-macOS-latest-3.9.txt
@@ -13,7 +13,7 @@ bokeh==2.4.3
     #   hvplot
     #   panel
     #   pyhdx (pyproject.toml)
-certifi==2023.7.22
+certifi==2024.7.4
     # via requests
 charset-normalizer==3.2.0
     # via requests
diff --git a/requirements/requirements-ubuntu-latest-3.9.txt b/requirements/requirements-ubuntu-latest-3.9.txt
index 8db7ddbb..d750af6f 100644
--- a/requirements/requirements-ubuntu-latest-3.9.txt
+++ b/requirements/requirements-ubuntu-latest-3.9.txt
@@ -13,7 +13,7 @@ bokeh==2.4.3
     #   hvplot
     #   panel
     #   pyhdx (pyproject.toml)
-certifi==2023.7.22
+certifi==2024.7.4
     # via requests
 charset-normalizer==3.2.0
     # via requests
diff --git a/requirements/requirements-windows-latest-3.9.txt b/requirements/requirements-windows-latest-3.9.txt
index 2f16841f..4f47760d 100644
--- a/requirements/requirements-windows-latest-3.9.txt
+++ b/requirements/requirements-windows-latest-3.9.txt
@@ -13,7 +13,7 @@ bokeh==2.4.3
     #   hvplot
     #   panel
     #   pyhdx (pyproject.toml)
-certifi==2023.7.22
+certifi==2024.7.4
     # via requests
 charset-normalizer==3.2.0
     # via requests