diff --git a/dev-requirements.txt b/dev-requirements.txt
index 852b7e5a..3f098c98 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -25,7 +25,7 @@ build==1.0.3
     # via pip-tools
 cdsapi==0.6.1
     # via swmmanywhere (pyproject.toml)
-certifi==2023.11.17
+certifi==2024.2.2
     # via
     #   fiona
     #   netcdf4
diff --git a/requirements.txt b/requirements.txt
index 32ffe117..769bf687 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,7 +22,7 @@ attrs==23.2.0
     #   referencing
 cdsapi==0.6.1
     # via swmmanywhere (pyproject.toml)
-certifi==2023.11.17
+certifi==2024.2.2
     # via
     #   fiona
     #   netcdf4