diff --git a/homeassistant/package_constraints.txt b/homeassistant/package_constraints.txt
index 2a580edf3a2..cd45f15fe7c 100644
--- a/homeassistant/package_constraints.txt
+++ b/homeassistant/package_constraints.txt
@@ -24,7 +24,7 @@ bluetooth-auto-recovery==1.4.2
 bluetooth-data-tools==1.20.0
 cached-ipaddress==0.8.0
 certifi>=2021.5.30
-ciso8601==2.3.1
+ciso8601==2.3.2
 cryptography==44.0.0
 dbus-fast==2.24.3
 fnv-hash-fast==1.0.2
diff --git a/pyproject.toml b/pyproject.toml
index dcfd84b0fbe..5239874e2f6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -41,7 +41,7 @@ dependencies    = [
     "awesomeversion==24.6.0",
     "bcrypt==4.2.0",
     "certifi>=2021.5.30",
-    "ciso8601==2.3.1",
+    "ciso8601==2.3.2",
     "fnv-hash-fast==1.0.2",
     # hass-nabucasa is imported by helpers which don't depend on the cloud
     # integration
diff --git a/requirements.txt b/requirements.txt
index 4379d51e204..7ed445c6b65 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ audioop-lts==0.2.1;python_version>='3.13'
 awesomeversion==24.6.0
 bcrypt==4.2.0
 certifi>=2021.5.30
-ciso8601==2.3.1
+ciso8601==2.3.2
 fnv-hash-fast==1.0.2
 hass-nabucasa==0.86.0
 httpx==0.27.2