diff --git a/requirements-healpy.txt b/requirements-healpy.txt
index 98bfb66eb..71a8c08f2 100644
--- a/requirements-healpy.txt
+++ b/requirements-healpy.txt
@@ -10,7 +10,7 @@ contourpy==1.3.3 ; python_version >= "3.11" and python_version < "3.15"
 cycler==0.12.1 ; python_version >= "3.11" and python_version < "3.15"
 fonttools==4.63.0 ; python_version >= "3.11" and python_version < "3.15"
 healpy==1.19.0 ; python_version >= "3.11" and python_version < "3.15"
-idna==3.17 ; python_version >= "3.11" and python_version < "3.15"
+idna==3.18 ; python_version >= "3.11" and python_version < "3.15"
 kiwisolver==1.5.0 ; python_version >= "3.11" and python_version < "3.15"
 matplotlib==3.10.9 ; python_version >= "3.11" and python_version < "3.15"
 mpmath==1.3.0 ; python_version >= "3.11" and python_version < "3.15"
diff --git a/requirements-jax.txt b/requirements-jax.txt
index fbac111b1..8ebe971a6 100644
--- a/requirements-jax.txt
+++ b/requirements-jax.txt
@@ -10,7 +10,7 @@ colorama==0.4.6 ; python_version >= "3.11" and python_version < "3.15" and platf
 contourpy==1.3.3 ; python_version >= "3.11" and python_version < "3.15"
 cycler==0.12.1 ; python_version >= "3.11" and python_version < "3.15"
 fonttools==4.63.0 ; python_version >= "3.11" and python_version < "3.15"
-idna==3.17 ; python_version >= "3.11" and python_version < "3.15"
+idna==3.18 ; python_version >= "3.11" and python_version < "3.15"
 jax==0.10.1 ; python_version >= "3.11" and python_version < "3.15"
 jaxlib==0.10.1 ; python_version >= "3.11" and python_version < "3.15"
 kiwisolver==1.5.0 ; python_version >= "3.11" and python_version < "3.15"
diff --git a/requirements-pytorch.txt b/requirements-pytorch.txt
index b2b781448..ea8174ddc 100644
--- a/requirements-pytorch.txt
+++ b/requirements-pytorch.txt
@@ -14,7 +14,7 @@ cycler==0.12.1 ; python_version >= "3.11" and python_version < "3.15"
 filelock==3.29.0 ; python_version >= "3.11" and python_version < "3.15"
 fonttools==4.63.0 ; python_version >= "3.11" and python_version < "3.15"
 fsspec==2026.4.0 ; python_version >= "3.11" and python_version < "3.15"
-idna==3.17 ; python_version >= "3.11" and python_version < "3.15"
+idna==3.18 ; python_version >= "3.11" and python_version < "3.15"
 jinja2==3.1.6 ; python_version >= "3.11" and python_version < "3.15"
 kiwisolver==1.5.0 ; python_version >= "3.11" and python_version < "3.15"
 markupsafe==3.0.3 ; python_version >= "3.11" and python_version < "3.15"