diff --git a/platform.json b/platform.json
index 4254672..46cd823 100644
--- a/platform.json
+++ b/platform.json
@@ -101,7 +101,7 @@
     },
     "tool-ltchiptool": {
       "type": "uploader",
-      "version": "https://github.com/libretiny-eu/ltchiptool#v4.0.0a4",
+      "version": "https://github.com/libretiny-eu/ltchiptool#v4.0.0",
       "version_prefix": true,
       "note": "This is used only for C/C++ code from ltchiptool."
     },
diff --git a/platform.py b/platform.py
index 458d89e..82ac785 100644
--- a/platform.py
+++ b/platform.py
@@ -27,7 +27,7 @@ def check_ltchiptool(install: bool):
         print("Installing/updating ltchiptool")
         system(
             f'"{sys.executable}" -m pip install -U --force-reinstall '
-            f'"ltchiptool >= {LTCHIPTOOL_VERSION[1:]}a0, < 5.0"'
+            f'"ltchiptool >= {LTCHIPTOOL_VERSION[1:]}, < 5.0"'
         )
 
         # unload all modules from the old version