diff --git a/requirements-dev.txt b/requirements-dev.txt
index 0257a7f8..0d9bff6c 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,4 +1,4 @@
-astropy-iers-data==0.2026.2.23.0.48.33 ; python_version >= "3.11" and python_version < "3.15"
+astropy-iers-data==0.2026.3.23.0.51.38 ; python_version >= "3.11" and python_version < "3.15"
 astropy==7.2.0 ; python_version >= "3.11" and python_version < "3.15"
 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"
diff --git a/requirements.txt b/requirements.txt
index ddee4250..a38e1513 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-astropy-iers-data==0.2026.2.23.0.48.33 ; python_version >= "3.11" and python_version < "3.15"
+astropy-iers-data==0.2026.3.23.0.51.38 ; python_version >= "3.11" and python_version < "3.15"
 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"