diff --git a/homeassistant/components/epson/manifest.json b/homeassistant/components/epson/manifest.json
index 310b66c0d37..82b74486377 100644
--- a/homeassistant/components/epson/manifest.json
+++ b/homeassistant/components/epson/manifest.json
@@ -3,7 +3,7 @@
   "name": "Epson",
   "config_flow": true,
   "documentation": "https://www.home-assistant.io/integrations/epson",
-  "requirements": ["epson-projector==0.4.2"],
+  "requirements": ["epson-projector==0.4.6"],
   "codeowners": ["@pszafer"],
   "iot_class": "local_polling",
   "loggers": ["epson_projector"]
diff --git a/homeassistant/components/epson/media_player.py b/homeassistant/components/epson/media_player.py
index f72b0f69d69..98152efb3b2 100644
--- a/homeassistant/components/epson/media_player.py
+++ b/homeassistant/components/epson/media_player.py
@@ -133,7 +133,10 @@ class EpsonProjectorMediaPlayer(MediaPlayerEntity):
             self._source = SOURCE_LIST.get(source, self._source)
             volume = await self._projector.get_property(VOLUME)
             if volume:
-                self._volume = volume
+                try:
+                    self._volume = float(volume)
+                except ValueError:
+                    self._volume = None
         elif power_state == BUSY:
             self._state = STATE_ON
         else:
@@ -176,11 +179,13 @@ class EpsonProjectorMediaPlayer(MediaPlayerEntity):
         """Turn on epson."""
         if self._state == STATE_OFF:
             await self._projector.send_command(TURN_ON)
+            self._state = STATE_ON
 
     async def async_turn_off(self):
         """Turn off epson."""
         if self._state == STATE_ON:
             await self._projector.send_command(TURN_OFF)
+            self._state = STATE_OFF
 
     @property
     def source_list(self):
diff --git a/requirements_all.txt b/requirements_all.txt
index 6aaa99d7838..3804872c58e 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -619,7 +619,7 @@ envoy_reader==0.20.1
 ephem==4.1.2
 
 # homeassistant.components.epson
-epson-projector==0.4.2
+epson-projector==0.4.6
 
 # homeassistant.components.epsonworkforce
 epsonprinter==0.0.9
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index a24245dfc3a..1fae9c42e30 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -465,7 +465,7 @@ envoy_reader==0.20.1
 ephem==4.1.2
 
 # homeassistant.components.epson
-epson-projector==0.4.2
+epson-projector==0.4.6
 
 # homeassistant.components.faa_delays
 faadelays==0.0.7