diff --git a/LSP-pyright.sublime-settings b/LSP-pyright.sublime-settings
index d063b10..9f8829b 100644
--- a/LSP-pyright.sublime-settings
+++ b/LSP-pyright.sublime-settings
@@ -10,12 +10,8 @@
 	"settings": {
 		// Use a predefined setup from this plugin, valid values are:
 		// - "": An empty string does nothing.
-		// - "sublime_text": Suitable for people who are developing ST Python plugins.
-		//                   The Python version which the developed plugin runs on will be used.
-		//                   `sys.path` from plugin_host will be added into "python.analysis.extraPaths"
-		//                   so ST package dependecies can be resolved by the LSP server.
-		// - "sublime_text_33": Similar to "sublime_text" but Python 3.3 forced.
-		// - "sublime_text_38": Similar to "sublime_text" but Python 3.8 forced.
+		// - "sublime_text": Suitable for people who are developing ST python 3.3 plugins. `sys.path` from the plugin_host will be added into "python.analysis.extraPaths" so that ST package dependencies can be resolved by the LSP server.
+		// - "sublime_text_33": The same with using "sublime_text".
 		"pyright.dev_environment": "",
 		// Offer auto-import completions.
 		"python.analysis.autoImportCompletions": true,
diff --git a/plugin.py b/plugin.py
index 67c69ee..360de2a 100644
--- a/plugin.py
+++ b/plugin.py
@@ -54,8 +54,8 @@ def on_settings_changed(self, settings: DottedDict) -> None:
         dev_environment = settings.get("pyright.dev_environment")
         extraPaths = settings.get("python.analysis.extraPaths") or []  # type: List[str]
 
-        if dev_environment in {"sublime_text", "sublime_text_33", "sublime_text_38"}:
-            py_ver = self.detect_st_py_ver(dev_environment)
+        if dev_environment in {"sublime_text", "sublime_text_33"}:
+            py_ver = (3, 3)  # there is only py33 on ST 3
             # add package dependencies into "python.analysis.extraPaths"
             extraPaths.extend(self.find_package_dependency_dirs(py_ver))
 
@@ -129,34 +129,6 @@ def patch_markdown_content(self, content: str) -> str:
         content = re.sub(r"\n:deprecated:", r"\n⚠️ __Deprecated:__", content)
         return content
 
-    def detect_st_py_ver(self, dev_environment: str) -> Tuple[int, int]:
-        st_packages_path = sublime.packages_path()
-        default = (3, 3)
-
-        if dev_environment == "sublime_text_33":
-            return (3, 3)
-        if dev_environment == "sublime_text_38":
-            return (3, 8)
-
-        if dev_environment == "sublime_text":
-            session = self.weaksession()
-            if not session:
-                return default
-            workspace_folders = session.get_workspace_folders()
-            if not workspace_folders:
-                return default
-            if workspace_folders[0].path == os.path.join(st_packages_path, "User"):
-                return (3, 8)
-            python_version_file = os.path.join(workspace_folders[0].path, ".python-version")
-            try:
-                with open(python_version_file, "r") as file:
-                    if file.read().strip() == "3.8":
-                        return (3, 8)
-            except Exception:
-                pass
-
-        return default
-
     @classmethod
     def get_plugin_setting(cls, key: str, default: Any = None) -> Any:
         return sublime.load_settings(cls.package_name + ".sublime-settings").get(key, default)
diff --git a/sublime-package.json b/sublime-package.json
index bd29dc0..f80b789 100644
--- a/sublime-package.json
+++ b/sublime-package.json
@@ -28,14 +28,12 @@
                       "enum": [
                         "",
                         "sublime_text",
-                        "sublime_text_33",
-                        "sublime_text_38"
+                        "sublime_text_33"
                       ],
                       "markdownEnumDescriptions": [
                         "No modifications applied.",
-                        "Suitable for people who are developing ST python plugins. The Python version which the developed plugin runs on will be used. - `sys.path` from the plugin_host will be added into \"python.analysis.extraPaths\" so that ST package dependencies can be resolved by the LSP server.",
-                        "Similar to \"sublime_text\" but Python 3.3 forced.",
-                        "Similar to \"sublime_text\" but Python 3.8 forced."
+                        "Suitable for people who are developing ST python plugins. `sys.path` from the plugin_host will be added into \"python.analysis.extraPaths\" so that ST package dependencies can be resolved by the LSP server.",
+                        "The same with using \"sublime_text\".",
                       ]
                     },
                     // pyright