diff --git a/homeassistant/components/sensor/dsmr.py b/homeassistant/components/sensor/dsmr.py
index 8df4776459e..23324fe7360 100644
--- a/homeassistant/components/sensor/dsmr.py
+++ b/homeassistant/components/sensor/dsmr.py
@@ -40,8 +40,7 @@ import voluptuous as vol
 
 _LOGGER = logging.getLogger(__name__)
 
-REQUIREMENTS = ['dsmr_parser==0.9']
-
+REQUIREMENTS = ['dsmr_parser==0.8']
 
 CONF_DSMR_VERSION = 'dsmr_version'
 CONF_RECONNECT_INTERVAL = 'reconnect_interval'
@@ -61,7 +60,7 @@ PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
     vol.Optional(CONF_PORT, default=DEFAULT_PORT): cv.string,
     vol.Optional(CONF_HOST, default=None): cv.string,
     vol.Optional(CONF_DSMR_VERSION, default=DEFAULT_DSMR_VERSION): vol.All(
-        cv.string, vol.In(['5', '4', '2.2'])),
+        cv.string, vol.In(['4', '2.2'])),
     vol.Optional(CONF_RECONNECT_INTERVAL, default=30): int,
 })
 
@@ -94,7 +93,7 @@ def async_setup_platform(hass, config, async_add_devices, discovery_info=None):
     devices = [DSMREntity(name, obis) for name, obis in obis_mapping]
 
     # Protocol version specific obis
-    if dsmr_version in ('4', '5'):
+    if dsmr_version == '4':
         gas_obis = obis_ref.HOURLY_GAS_METER_READING
     else:
         gas_obis = obis_ref.GAS_METER_READING
diff --git a/requirements_all.txt b/requirements_all.txt
index ac38f479c87..7fcf54b9809 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -162,7 +162,7 @@ dnspython3==1.15.0
 dovado==0.4.1
 
 # homeassistant.components.sensor.dsmr
-dsmr_parser==0.9
+dsmr_parser==0.8
 
 # homeassistant.components.dweet
 # homeassistant.components.sensor.dweet
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index f56ab8c3194..ded0c661226 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -37,7 +37,7 @@ aiohttp_cors==0.5.3
 apns2==0.1.1
 
 # homeassistant.components.sensor.dsmr
-dsmr_parser==0.9
+dsmr_parser==0.8
 
 # homeassistant.components.climate.honeywell
 evohomeclient==0.2.5