diff --git a/pkgs/tools/misc/esphome/default.nix b/pkgs/tools/misc/esphome/default.nix
index 3a7cc24e6700..a4678e357008 100644
--- a/pkgs/tools/misc/esphome/default.nix
+++ b/pkgs/tools/misc/esphome/default.nix
@@ -16,13 +16,13 @@ let
 in
 with python.pkgs; buildPythonApplication rec {
   pname = "esphome";
-  version = "2021.9.0";
+  version = "2021.9.1";
 
   src = fetchFromGitHub {
     owner = pname;
     repo = pname;
     rev = version;
-    sha256 = "sha256-QYtScfw+VFYc5rljDf1W+vI8Rx2UJuQ51yBTBVhO7Ns=";
+    sha256 = "sha256-JWUGOvY34wZSBTZdpuApPjEfBtgPSFKiVk89TUK441I=";
   };
 
   patches = [