diff --git a/homeassistant/components/smart_meter_texas/manifest.json b/homeassistant/components/smart_meter_texas/manifest.json
index 1b18bbb2bc9..8bf44fbed15 100644
--- a/homeassistant/components/smart_meter_texas/manifest.json
+++ b/homeassistant/components/smart_meter_texas/manifest.json
@@ -6,5 +6,5 @@
   "documentation": "https://www.home-assistant.io/integrations/smart_meter_texas",
   "iot_class": "cloud_polling",
   "loggers": ["smart_meter_texas"],
-  "requirements": ["smart-meter-texas==0.4.7"]
+  "requirements": ["smart-meter-texas==0.5.5"]
 }
diff --git a/requirements_all.txt b/requirements_all.txt
index 4e788f9aa80..dca62841c08 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -2563,7 +2563,7 @@ slackclient==2.5.0
 slixmpp==1.8.5
 
 # homeassistant.components.smart_meter_texas
-smart-meter-texas==0.4.7
+smart-meter-texas==0.5.5
 
 # homeassistant.components.smhi
 smhi-pkg==1.0.16
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index 16975128dae..17411a81818 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -1982,7 +1982,7 @@ simplisafe-python==2024.01.0
 slackclient==2.5.0
 
 # homeassistant.components.smart_meter_texas
-smart-meter-texas==0.4.7
+smart-meter-texas==0.5.5
 
 # homeassistant.components.smhi
 smhi-pkg==1.0.16
diff --git a/tests/components/smart_meter_texas/conftest.py b/tests/components/smart_meter_texas/conftest.py
index 04a3344b5cc..d06571fe05e 100644
--- a/tests/components/smart_meter_texas/conftest.py
+++ b/tests/components/smart_meter_texas/conftest.py
@@ -58,7 +58,7 @@ def mock_connection(
     """Mock all calls to the API."""
     aioclient_mock.get(BASE_URL)
 
-    auth_endpoint = f"{BASE_ENDPOINT}{AUTH_ENDPOINT}"
+    auth_endpoint = AUTH_ENDPOINT
     if not auth_fail and not auth_timeout:
         aioclient_mock.post(
             auth_endpoint,