diff --git a/Doxygen b/Doxygen
index 0841f1c17..a4851c025 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         = 2024.10.0-dev
+PROJECT_NUMBER         = 2024.9.0b1
 
 # 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 aaf14f951..d1636fb0b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 ESPHOME_PATH = ../esphome
-ESPHOME_REF = dev
+ESPHOME_REF = 2024.9.0b1
 PAGEFIND_VERSION=1.1.0
 PAGEFIND=pagefind
 NET_PAGEFIND=../pagefindbin/pagefind
diff --git a/_static/version b/_static/version
index 135cd558d..7824c0829 100644
--- a/_static/version
+++ b/_static/version
@@ -1 +1 @@
-2024.10.0-dev
\ No newline at end of file
+2024.9.0b1
\ No newline at end of file
diff --git a/conf.py b/conf.py
index 122ba0064..3cb19ec09 100644
--- a/conf.py
+++ b/conf.py
@@ -67,9 +67,9 @@ author = "ESPHome"
 # built documents.
 #
 # The short X.Y version.
-version = "2024.10"
+version = "2024.9"
 # The full version, including alpha/beta/rc tags.
-release = "2024.10.0-dev"
+release = "2024.9.0b1"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.