diff --git a/homeassistant/package_constraints.txt b/homeassistant/package_constraints.txt
index a8e351341f0..d45381ebb78 100644
--- a/homeassistant/package_constraints.txt
+++ b/homeassistant/package_constraints.txt
@@ -50,7 +50,7 @@ orjson==3.11.3
 packaging>=23.1
 paho-mqtt==2.1.0
 Pillow==11.3.0
-propcache==0.3.2
+propcache==0.4.0
 psutil-home-assistant==0.0.1
 PyJWT==2.10.1
 pymicro-vad==1.0.1
diff --git a/pyproject.toml b/pyproject.toml
index f8b6265c7db..dd45f3b357a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -59,7 +59,7 @@ dependencies = [
   # PyJWT has loose dependency. We want the latest one.
   "cryptography==46.0.2",
   "Pillow==11.3.0",
-  "propcache==0.3.2",
+  "propcache==0.4.0",
   "pyOpenSSL==25.3.0",
   "orjson==3.11.3",
   "packaging>=23.1",
diff --git a/requirements.txt b/requirements.txt
index a71facc62f6..3b0e56199e3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ lru-dict==1.3.0
 PyJWT==2.10.1
 cryptography==46.0.2
 Pillow==11.3.0
-propcache==0.3.2
+propcache==0.4.0
 pyOpenSSL==25.3.0
 orjson==3.11.3
 packaging>=23.1