diff --git a/homeassistant/components/energy/data.py b/homeassistant/components/energy/data.py
index 9c5a9fbacd1..ff86177cf41 100644
--- a/homeassistant/components/energy/data.py
+++ b/homeassistant/components/energy/data.py
@@ -331,7 +331,7 @@ class EnergyManager:
             "device_consumption",
         ):
             if key in update:
-                data[key] = update[key]  # type: ignore[literal-required]
+                data[key] = update[key]
 
         self.data = data
         self._store.async_delay_save(lambda: data, 60)
diff --git a/homeassistant/components/image_processing/__init__.py b/homeassistant/components/image_processing/__init__.py
index 2c1d0f9304c..0ac8d39813b 100644
--- a/homeassistant/components/image_processing/__init__.py
+++ b/homeassistant/components/image_processing/__init__.py
@@ -223,7 +223,7 @@ class ImageProcessingFaceEntity(ImageProcessingEntity):
                 confidence = f_co
                 for attr in (ATTR_NAME, ATTR_MOTION):
                     if attr in face:
-                        state = face[attr]  # type: ignore[literal-required]
+                        state = face[attr]
                         break
 
         return state
diff --git a/mypy.ini b/mypy.ini
index 1b988777594..c851e586246 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -11,6 +11,7 @@ follow_imports = normal
 local_partial_types = true
 strict_equality = true
 no_implicit_optional = true
+report_deprecated_as_error = true
 warn_incomplete_stub = true
 warn_redundant_casts = true
 warn_unused_configs = true
diff --git a/requirements_test.txt b/requirements_test.txt
index c879f0c6621..241fff89ac3 100644
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -12,7 +12,7 @@ coverage==7.6.1
 freezegun==1.5.1
 license-expression==30.4.0
 mock-open==1.4.0
-mypy-dev==1.13.0a1
+mypy-dev==1.14.0a2
 pre-commit==4.0.0
 pydantic==1.10.18
 pylint==3.3.1
diff --git a/script/hassfest/mypy_config.py b/script/hassfest/mypy_config.py
index de42c964ddf..25fe875e437 100644
--- a/script/hassfest/mypy_config.py
+++ b/script/hassfest/mypy_config.py
@@ -43,6 +43,7 @@ GENERAL_SETTINGS: Final[dict[str, str]] = {
     "local_partial_types": "true",
     "strict_equality": "true",
     "no_implicit_optional": "true",
+    "report_deprecated_as_error": "true",
     "warn_incomplete_stub": "true",
     "warn_redundant_casts": "true",
     "warn_unused_configs": "true",