diff --git a/homeassistant/package_constraints.txt b/homeassistant/package_constraints.txt
index b633ec97bd0..c3117734018 100644
--- a/homeassistant/package_constraints.txt
+++ b/homeassistant/package_constraints.txt
@@ -46,7 +46,7 @@ PyYAML==6.0
 requests==2.31.0
 scapy==2.5.0
 SQLAlchemy==2.0.15
-typing-extensions>=4.5.0,<5.0
+typing_extensions>=4.5.0,<5.0
 ulid-transform==0.7.2
 voluptuous-serialize==2.6.0
 voluptuous==0.13.1
diff --git a/pyproject.toml b/pyproject.toml
index 3868e85988b..7e8318c6e69 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -49,7 +49,7 @@ dependencies    = [
     "python-slugify==4.0.1",
     "PyYAML==6.0",
     "requests==2.31.0",
-    "typing-extensions>=4.5.0,<5.0",
+    "typing_extensions>=4.5.0,<5.0",
     "ulid-transform==0.7.2",
     "voluptuous==0.13.1",
     "voluptuous-serialize==2.6.0",
diff --git a/requirements.txt b/requirements.txt
index 6a2630e2ab4..ee8b2d7821a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ pip>=21.0,<23.2
 python-slugify==4.0.1
 PyYAML==6.0
 requests==2.31.0
-typing-extensions>=4.5.0,<5.0
+typing_extensions>=4.5.0,<5.0
 ulid-transform==0.7.2
 voluptuous==0.13.1
 voluptuous-serialize==2.6.0