diff --git a/pkgs/tools/misc/esptool/default.nix b/pkgs/tools/misc/esptool/default.nix
index 7953f316d3f2..2bf7b280d254 100644
--- a/pkgs/tools/misc/esptool/default.nix
+++ b/pkgs/tools/misc/esptool/default.nix
@@ -5,13 +5,13 @@
 
 python3.pkgs.buildPythonApplication rec {
   pname = "esptool";
-  version = "4.5";
+  version = "4.5.1";
 
   src = fetchFromGitHub {
     owner = "espressif";
     repo = "esptool";
     rev = "v${version}";
-    hash = "sha256-SwMdemCk3e3RyXTzoXIqDRywpg3ogE9nQjXGBz0BjwE=";
+    hash = "sha256-FKFw7czXzC8F3OXjlLoJEFaqsSgqWz0ZEqd7KjCy5Ik=";
   };
 
   propagatedBuildInputs = with python3.pkgs; [