diff --git a/esphome-dev/README.md b/esphome-dev/README.md
index ca1479c..c4862da 100644
--- a/esphome-dev/README.md
+++ b/esphome-dev/README.md
@@ -37,7 +37,7 @@ Then just click UPLOAD and the sensor will magically appear in Home Assistant:
 To install this Home Assistant add-on you need to add the ESPHome add-on repository
 first:
 
-1. Add the esphome add-ons repository to your Home Assistant instance. You can do this by navigating to the "Add-on store" tab in the Supervisor panel and then entering https://github.com/esphome/hassio in the "Add repository" field after selecting "Repositories" from the top-right menu.
+1. Add the ESPHome add-ons repository to your Home Assistant instance. You can do this by navigating to the "Add-on store" tab in the Supervisor panel and then entering https://github.com/esphome/hassio in the "Add repository" field after selecting "Repositories" from the top-right menu.
 2. Now scroll down and select the "ESPHome" add-on.
 3. Press install to download the add-on and unpack it on your machine. This can take some time.
 4. Optional: If you're using SSL/TLS certificates and want to encrypt your communication to this add-on, please enter `true` into the `ssl` field and set the `fullchain` and `certfile` options accordingly.
diff --git a/esphome-dev/build.json b/esphome-dev/build.json
index 9e449d9..929a2bd 100644
--- a/esphome-dev/build.json
+++ b/esphome-dev/build.json
@@ -1,10 +1,10 @@
 {
   "args": {},
   "build_from": {
-    "aarch64": "esphome/esphome-hassio-base-aarch64:2.1.1",
-    "amd64": "esphome/esphome-hassio-base-amd64:2.1.1",
-    "armv7": "esphome/esphome-hassio-base-armv7:2.1.1",
-    "i386": "esphome/esphome-hassio-base-i386:2.1.1"
+    "aarch64": "esphome/esphome-hassio-base-aarch64:2.3.3",
+    "amd64": "esphome/esphome-hassio-base-amd64:2.3.3",
+    "armv7": "esphome/esphome-hassio-base-armv7:2.3.3",
+    "i386": "esphome/esphome-hassio-base-i386:2.3.3"
   },
   "squash": false
 }
\ No newline at end of file
diff --git a/script/requirements.txt b/script/requirements.txt
new file mode 100644
index 0000000..7a997b5
--- /dev/null
+++ b/script/requirements.txt
@@ -0,0 +1 @@
+PyYAML==5.3.1
diff --git a/template/config.yaml b/template/config.yaml
index c82b480..5ad3d5b 100644
--- a/template/config.yaml
+++ b/template/config.yaml
@@ -39,7 +39,7 @@ base: &base
     streamer_mode: bool?
     relative_url: str?
     status_use_ping: bool?
-  base_image: esphome/esphome-hassio-base-{arch}:2.1.1
+  base_image: esphome/esphome-hassio-base-{arch}:2.3.3
 
 esphome-dev:
   <<: *base