diff --git a/homeassistant/components/amazon_polly/manifest.json b/homeassistant/components/amazon_polly/manifest.json
index 19140aac939682..20d443f225eb18 100644
--- a/homeassistant/components/amazon_polly/manifest.json
+++ b/homeassistant/components/amazon_polly/manifest.json
@@ -3,7 +3,7 @@
   "name": "Amazon polly",
   "documentation": "https://www.home-assistant.io/components/amazon_polly",
   "requirements": [
-    "boto3==1.9.16"
+    "boto3==1.9.233"
   ],
   "dependencies": [],
   "codeowners": [
diff --git a/homeassistant/components/amazon_polly/tts.py b/homeassistant/components/amazon_polly/tts.py
index c7098867ee899e..64b8b71457cd3f 100644
--- a/homeassistant/components/amazon_polly/tts.py
+++ b/homeassistant/components/amazon_polly/tts.py
@@ -33,6 +33,7 @@
     "sa-east-1",
 ]
 
+CONF_ENGINE = "engine"
 CONF_VOICE = "voice"
 CONF_OUTPUT_FORMAT = "output_format"
 CONF_SAMPLE_RATE = "sample_rate"
@@ -101,10 +102,12 @@
 
 SUPPORTED_OUTPUT_FORMATS = ["mp3", "ogg_vorbis", "pcm"]
 
-SUPPORTED_SAMPLE_RATES = ["8000", "16000", "22050"]
+SUPPORTED_ENGINES = ["neural", "standard"]
+
+SUPPORTED_SAMPLE_RATES = ["8000", "16000", "22050", "24000"]
 
 SUPPORTED_SAMPLE_RATES_MAP = {
-    "mp3": ["8000", "16000", "22050"],
+    "mp3": ["8000", "16000", "22050", "24000"],
     "ogg_vorbis": ["8000", "16000", "22050"],
     "pcm": ["8000", "16000"],
 }
@@ -113,6 +116,7 @@
 
 CONTENT_TYPE_EXTENSIONS = {"audio/mpeg": "mp3", "audio/ogg": "ogg", "audio/pcm": "pcm"}
 
+DEFAULT_ENGINE = "standard"
 DEFAULT_VOICE = "Joanna"
 DEFAULT_OUTPUT_FORMAT = "mp3"
 DEFAULT_TEXT_TYPE = "text"
@@ -126,6 +130,7 @@
         vol.Inclusive(CONF_SECRET_ACCESS_KEY, ATTR_CREDENTIALS): cv.string,
         vol.Exclusive(CONF_PROFILE_NAME, ATTR_CREDENTIALS): cv.string,
         vol.Optional(CONF_VOICE, default=DEFAULT_VOICE): vol.In(SUPPORTED_VOICES),
+        vol.Optional(CONF_ENGINE, default=DEFAULT_ENGINE): vol.In(SUPPORTED_ENGINES),
         vol.Optional(CONF_OUTPUT_FORMAT, default=DEFAULT_OUTPUT_FORMAT): vol.In(
             SUPPORTED_OUTPUT_FORMATS
         ),
@@ -225,6 +230,7 @@ def get_tts_audio(self, message, language=None, options=None):
             return None, None
 
         resp = self.client.synthesize_speech(
+            Engine=self.config[CONF_ENGINE],
             OutputFormat=self.config[CONF_OUTPUT_FORMAT],
             SampleRate=self.config[CONF_SAMPLE_RATE],
             Text=message,
diff --git a/homeassistant/components/route53/manifest.json b/homeassistant/components/route53/manifest.json
index d377ca7dca03c0..7ac91964a98720 100644
--- a/homeassistant/components/route53/manifest.json
+++ b/homeassistant/components/route53/manifest.json
@@ -3,7 +3,7 @@
   "name": "Route53",
   "documentation": "https://www.home-assistant.io/components/route53",
   "requirements": [
-    "boto3==1.9.16",
+    "boto3==1.9.233",
     "ipify==1.0.0"
   ],
   "dependencies": [],
diff --git a/requirements_all.txt b/requirements_all.txt
index ee439d455923b5..aba6a345778f53 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -302,7 +302,7 @@ bomradarloop==0.1.3
 
 # homeassistant.components.amazon_polly
 # homeassistant.components.route53
-boto3==1.9.16
+boto3==1.9.233
 
 # homeassistant.components.braviatv
 braviarc-homeassistant==0.3.7.dev0