diff --git a/Doxygen b/Doxygen
index 8b0dc9c98..790fcddee 100644
--- a/Doxygen
+++ b/Doxygen
@@ -38,7 +38,7 @@ PROJECT_NAME           = "ESPHome"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 2021.10.0-dev
+PROJECT_NUMBER         = 2021.10.0b1
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
diff --git a/Makefile b/Makefile
index a3947eab0..c5288bc44 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 ESPHOME_PATH = ../esphome
-ESPHOME_REF = dev
+ESPHOME_REF = 2021.10.0b1
 
 .PHONY: html html-strict cleanhtml deploy help webserver Makefile netlify netlify-api api netlify-dependencies svg2png copy-svg2png minify
 
diff --git a/_static/version b/_static/version
index 0b185088a..597c7733d 100644
--- a/_static/version
+++ b/_static/version
@@ -1 +1 @@
-2021.10.0-dev
+2021.10.0b1
\ No newline at end of file
diff --git a/conf.py b/conf.py
index e886428b2..ef0fe381f 100644
--- a/conf.py
+++ b/conf.py
@@ -69,7 +69,7 @@ author = "Otto Winter"
 # The short X.Y version.
 version = "2021.10"
 # The full version, including alpha/beta/rc tags.
-release = "2021.10.0-dev"
+release = "2021.10.0b1"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.