diff --git a/build.rs b/build.rs
index a4a74a9..4e19ccd 100644
--- a/build.rs
+++ b/build.rs
@@ -182,6 +182,7 @@ fn main() {
 // creates a cfg alias if `has_feature` is true.
 // `alias` must be a snake case string.
 fn alias(alias: &str, has_feature: bool) {
+    println!("cargo:rustc-check-cfg=cfg({alias})");
     if has_feature {
         println!("cargo:rustc-cfg={alias}");
     }
diff --git a/src/commands.rs b/src/commands.rs
index 3345bb3..5bee6b9 100644
--- a/src/commands.rs
+++ b/src/commands.rs
@@ -11,8 +11,9 @@ use tauri::{
     Manager, Runtime, State, Window,
 };
 
+#[allow(deprecated)]
+use crate::open::Program;
 use crate::{
-    open::Program,
     process::{CommandEvent, TerminatedPayload},
     scope::ExecuteArgs,
     Shell,
@@ -302,6 +303,7 @@ pub fn kill<R: Runtime>(
     Ok(())
 }
 
+#[allow(deprecated)]
 #[tauri::command]
 pub async fn open<R: Runtime>(
     _window: Window<R>,
diff --git a/src/lib.rs b/src/lib.rs
index f5458dd..64cc612 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -26,6 +26,8 @@ use tauri::{
 mod commands;
 mod config;
 mod error;
+#[deprecated(since = "2.1.0", note = "Use tauri-plugin-opener instead.")]
+#[allow(deprecated)]
 pub mod open;
 pub mod process;
 mod scope;
@@ -70,6 +72,8 @@ impl<R: Runtime> Shell<R> {
     ///
     /// See [`crate::open::open`] for how it handles security-related measures.
     #[cfg(desktop)]
+    #[deprecated(since = "2.1.0", note = "Use tauri-plugin-opener instead.")]
+    #[allow(deprecated)]
     pub fn open(&self, path: impl Into<String>, with: Option<open::Program>) -> Result<()> {
         open::open(&self.open_scope, path.into(), with).map_err(Into::into)
     }
@@ -78,6 +82,7 @@ impl<R: Runtime> Shell<R> {
     ///
     /// See [`crate::open::open`] for how it handles security-related measures.
     #[cfg(mobile)]
+    #[deprecated(since = "2.1.0", note = "Use tauri-plugin-opener instead.")]
     pub fn open(&self, path: impl Into<String>, _with: Option<open::Program>) -> Result<()> {
         self.mobile_plugin_handle
             .run_mobile_plugin("open", path.into())
diff --git a/src/open.rs b/src/open.rs
index 8366b45..fe22470 100644
--- a/src/open.rs
+++ b/src/open.rs
@@ -10,6 +10,7 @@ use crate::scope::OpenScope;
 use std::str::FromStr;
 
 /// Program to use on the [`open()`] call.
+#[deprecated(since = "2.1.0", note = "Use tauri-plugin-opener instead.")]
 pub enum Program {
     /// Use the `open` program.
     Open,
@@ -117,6 +118,7 @@ impl Program {
 ///     Ok(())
 ///   });
 /// ```
+#[deprecated(since = "2.1.0", note = "Use tauri-plugin-opener instead.")]
 pub fn open<P: AsRef<str>>(scope: &OpenScope, path: P, with: Option<Program>) -> crate::Result<()> {
     scope.open(path.as_ref(), with).map_err(Into::into)
 }
diff --git a/src/scope.rs b/src/scope.rs
index 8178ab1..9e76931 100644
--- a/src/scope.rs
+++ b/src/scope.rs
@@ -4,6 +4,7 @@
 
 use std::sync::Arc;
 
+#[allow(deprecated)]
 use crate::open::Program;
 use crate::process::Command;
 
@@ -201,6 +202,7 @@ impl OpenScope {
     ///
     /// The path is validated against the `plugins > shell > open` validation regex, which
     /// defaults to `^((mailto:\w+)|(tel:\w+)|(https?://\w+)).+`.
+    #[allow(deprecated)]
     pub fn open(&self, path: &str, with: Option<Program>) -> Result<(), Error> {
         // ensure we pass validation if the configuration has one
         if let Some(regex) = &self.open {