diff --git a/requirements-dev.txt b/requirements-dev.txt
index 0257a7f8..b2198fc7 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -4,7 +4,7 @@ autograd==1.8.0 ; python_version >= "3.11" and python_version < "3.15"
 autopep8==2.3.2 ; python_version >= "3.11" and python_version < "3.15"
 bayesian-filters==1.4.5 ; python_version >= "3.11" and python_version < "3.15"
 beartype==0.22.9 ; python_version >= "3.11" and python_version < "3.15"
-certifi==2026.1.4 ; python_version >= "3.11" and python_version < "3.15"
+certifi==2026.2.25 ; python_version >= "3.11" and python_version < "3.15"
 charset-normalizer==3.4.4 ; python_version >= "3.11" and python_version < "3.15"
 colorama==0.4.6 ; python_version >= "3.11" and python_version < "3.15" and (sys_platform == "win32" or platform_system == "Windows")
 contourpy==1.3.3 ; python_version >= "3.11" and python_version < "3.15"
diff --git a/requirements.txt b/requirements.txt
index ddee4250..ed827213 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ astropy-iers-data==0.2026.2.23.0.48.33 ; python_version >= "3.11" and python_ver
 astropy==7.2.0 ; python_version >= "3.11" and python_version < "3.15"
 bayesian-filters==1.4.5 ; python_version >= "3.11" and python_version < "3.15"
 beartype==0.22.9 ; python_version >= "3.11" and python_version < "3.15"
-certifi==2026.1.4 ; python_version >= "3.11" and python_version < "3.15"
+certifi==2026.2.25 ; python_version >= "3.11" and python_version < "3.15"
 charset-normalizer==3.4.4 ; python_version >= "3.11" and python_version < "3.15"
 colorama==0.4.6 ; python_version >= "3.11" and python_version < "3.15" and platform_system == "Windows"
 contourpy==1.3.3 ; python_version >= "3.11" and python_version < "3.15"