diff --git a/homeassistant/components/bsblan/manifest.json b/homeassistant/components/bsblan/manifest.json
index 5b10f46bf13..aa9c03abf4a 100644
--- a/homeassistant/components/bsblan/manifest.json
+++ b/homeassistant/components/bsblan/manifest.json
@@ -7,5 +7,5 @@
   "integration_type": "device",
   "iot_class": "local_polling",
   "loggers": ["bsblan"],
-  "requirements": ["python-bsblan==1.0.0"]
+  "requirements": ["python-bsblan==1.2.1"]
 }
diff --git a/requirements_all.txt b/requirements_all.txt
index 10e4dd4fefb..80db6a022d2 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -2308,7 +2308,7 @@ python-awair==0.2.4
 python-blockchain-api==0.0.2
 
 # homeassistant.components.bsblan
-python-bsblan==1.0.0
+python-bsblan==1.2.1
 
 # homeassistant.components.clementine
 python-clementine-remote==1.0.1
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index fb67a3f12ca..324321456e9 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -1859,7 +1859,7 @@ python-MotionMount==2.2.0
 python-awair==0.2.4
 
 # homeassistant.components.bsblan
-python-bsblan==1.0.0
+python-bsblan==1.2.1
 
 # homeassistant.components.ecobee
 python-ecobee-api==0.2.20
diff --git a/tests/components/bsblan/snapshots/test_diagnostics.ambr b/tests/components/bsblan/snapshots/test_diagnostics.ambr
index e033b2417d2..9fabd373205 100644
--- a/tests/components/bsblan/snapshots/test_diagnostics.ambr
+++ b/tests/components/bsblan/snapshots/test_diagnostics.ambr
@@ -6,67 +6,103 @@
         'current_temperature': dict({
           'data_type': 0,
           'desc': '',
+          'error': 0,
           'name': 'Room temp 1 actual value',
+          'precision': None,
+          'readonly': 1,
+          'readwrite': 0,
           'unit': '°C',
-          'value': '18.6',
+          'value': 18.6,
         }),
         'outside_temperature': dict({
           'data_type': 0,
           'desc': '',
+          'error': 0,
           'name': 'Outside temp sensor local',
+          'precision': None,
+          'readonly': 0,
+          'readwrite': 0,
           'unit': '°C',
-          'value': '6.1',
+          'value': 6.1,
         }),
       }),
       'state': dict({
         'current_temperature': dict({
           'data_type': 0,
           'desc': '',
+          'error': 0,
           'name': 'Room temp 1 actual value',
+          'precision': None,
+          'readonly': 1,
+          'readwrite': 0,
           'unit': '°C',
-          'value': '18.6',
+          'value': 18.6,
         }),
         'hvac_action': dict({
           'data_type': 1,
           'desc': 'Raumtemp’begrenzung',
+          'error': 0,
           'name': 'Status heating circuit 1',
+          'precision': None,
+          'readonly': 1,
+          'readwrite': 0,
           'unit': '',
-          'value': '122',
+          'value': 122,
         }),
         'hvac_mode': dict({
           'data_type': 1,
           'desc': 'Komfort',
+          'error': 0,
           'name': 'Operating mode',
+          'precision': None,
+          'readonly': 0,
+          'readwrite': 0,
           'unit': '',
           'value': 'heat',
         }),
         'hvac_mode2': dict({
           'data_type': 1,
           'desc': 'Reduziert',
+          'error': 0,
           'name': 'Operating mode',
+          'precision': None,
+          'readonly': 0,
+          'readwrite': 0,
           'unit': '',
-          'value': '2',
+          'value': 2,
         }),
         'room1_temp_setpoint_boost': dict({
           'data_type': 1,
           'desc': 'Boost',
+          'error': 0,
           'name': 'Room 1 Temp Setpoint Boost',
+          'precision': None,
+          'readonly': 1,
+          'readwrite': 0,
           'unit': '°C',
           'value': '22.5',
         }),
         'room1_thermostat_mode': dict({
           'data_type': 1,
           'desc': 'Kein Bedarf',
+          'error': 0,
           'name': 'Raumthermostat 1',
+          'precision': None,
+          'readonly': 1,
+          'readwrite': 0,
           'unit': '',
-          'value': '0',
+          'value': 0,
         }),
         'target_temperature': dict({
           'data_type': 0,
           'desc': '',
+          'error': 0,
           'name': 'Room temperature Comfort setpoint',
+          'precision': None,
+          'readonly': 0,
+          'readwrite': 0,
           'unit': '°C',
-          'value': '18.5',
+          'value': 18.5,
         }),
       }),
     }),
@@ -80,21 +116,33 @@
       'controller_family': dict({
         'data_type': 0,
         'desc': '',
+        'error': 0,
         'name': 'Device family',
+        'precision': None,
+        'readonly': 0,
+        'readwrite': 0,
         'unit': '',
-        'value': '211',
+        'value': 211,
       }),
       'controller_variant': dict({
         'data_type': 0,
         'desc': '',
+        'error': 0,
         'name': 'Device variant',
+        'precision': None,
+        'readonly': 0,
+        'readwrite': 0,
         'unit': '',
-        'value': '127',
+        'value': 127,
       }),
       'device_identification': dict({
         'data_type': 7,
         'desc': '',
+        'error': 0,
         'name': 'Gerte-Identifikation',
+        'precision': None,
+        'readonly': 0,
+        'readwrite': 0,
         'unit': '',
         'value': 'RVS21.831F/127',
       }),
@@ -103,16 +151,24 @@
       'max_temp': dict({
         'data_type': 0,
         'desc': '',
+        'error': 0,
         'name': 'Summer/winter changeover temp heat circuit 1',
+        'precision': None,
+        'readonly': 0,
+        'readwrite': 0,
         'unit': '°C',
-        'value': '20.0',
+        'value': 20.0,
       }),
       'min_temp': dict({
         'data_type': 0,
         'desc': '',
+        'error': 0,
         'name': 'Room temp frost protection setpoint',
+        'precision': None,
+        'readonly': 0,
+        'readwrite': 0,
         'unit': '°C',
-        'value': '8.0',
+        'value': 8.0,
       }),
     }),
   })