diff --git a/homeassistant/package_constraints.txt b/homeassistant/package_constraints.txt
index 0ae993bb3e1..7a358cc2f29 100644
--- a/homeassistant/package_constraints.txt
+++ b/homeassistant/package_constraints.txt
@@ -46,7 +46,7 @@ ifaddr==0.2.0
 Jinja2==3.1.6
 lru-dict==1.3.0
 mutagen==1.47.0
-orjson==3.11.3
+orjson==3.11.5
 packaging>=23.1
 paho-mqtt==2.1.0
 Pillow==12.0.0
diff --git a/pyproject.toml b/pyproject.toml
index 624b7810c86..4413848a039 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -62,7 +62,7 @@ dependencies = [
   "Pillow==12.0.0",
   "propcache==0.4.1",
   "pyOpenSSL==25.3.0",
-  "orjson==3.11.3",
+  "orjson==3.11.5",
   "packaging>=23.1",
   "psutil-home-assistant==0.0.1",
   "python-slugify==8.0.4",
diff --git a/requirements.txt b/requirements.txt
index 50d3503d6f1..c03d6674545 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,7 +33,7 @@ ifaddr==0.2.0
 Jinja2==3.1.6
 lru-dict==1.3.0
 mutagen==1.47.0
-orjson==3.11.3
+orjson==3.11.5
 packaging>=23.1
 Pillow==12.0.0
 propcache==0.4.1