diff --git a/homeassistant/package_constraints.txt b/homeassistant/package_constraints.txt
index 5c0db0659d6..bf6730a9c75 100644
--- a/homeassistant/package_constraints.txt
+++ b/homeassistant/package_constraints.txt
@@ -5,7 +5,7 @@ aiodiscover==2.1.0
 aiodns==3.2.0
 aiohasupervisor==0.2.1
 aiohttp-fast-zlib==0.2.0
-aiohttp==3.11.8
+aiohttp==3.11.9
 aiohttp_cors==0.7.0
 aiozoneinfo==0.2.1
 astral==2.2
diff --git a/pyproject.toml b/pyproject.toml
index 2c143db77f6..ab9001cff42 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,7 +29,7 @@ dependencies    = [
     # change behavior based on presence of supervisor. Deprecated with #127228
     # Lib can be removed with 2025.11
     "aiohasupervisor==0.2.1",
-    "aiohttp==3.11.8",
+    "aiohttp==3.11.9",
     "aiohttp_cors==0.7.0",
     "aiohttp-fast-zlib==0.2.0",
     "aiozoneinfo==0.2.1",
diff --git a/requirements.txt b/requirements.txt
index 514ab132bc8..73153bd90cb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@
 # Home Assistant Core
 aiodns==3.2.0
 aiohasupervisor==0.2.1
-aiohttp==3.11.8
+aiohttp==3.11.9
 aiohttp_cors==0.7.0
 aiohttp-fast-zlib==0.2.0
 aiozoneinfo==0.2.1