diff --git a/Cargo.toml b/Cargo.toml
index df68f6440..49afc2bd3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -196,7 +196,7 @@ uuid = { version = "1.16.0" }
 version-ranges = { version = "0.1.3", package = "astral-version-ranges" }
 walkdir = { version = "2.5.0" }
 which = { version = "8.0.0", features = ["regex"] }
-windows = { version = "0.59.0", features = ["std", "Win32_Globalization", "Win32_System_LibraryLoader", "Win32_System_Console", "Win32_System_Kernel", "Win32_System_Diagnostics_Debug", "Win32_Storage_FileSystem", "Win32_Security", "Win32_System_Registry", "Win32_System_IO", "Win32_System_Ioctl"] }
+windows = { version = "0.59.0", features = ["std", "Win32_Globalization", "Win32_Security", "Win32_Storage_FileSystem", "Win32_System_Console", "Win32_System_Diagnostics_Debug", "Win32_System_IO", "Win32_System_Ioctl", "Win32_System_Kernel", "Win32_System_LibraryLoader", "Win32_System_Registry", "Win32_UI_WindowsAndMessaging"] }
 windows-registry = { version = "0.5.0" }
 wiremock = { version = "0.6.4" }
 wmi = { version = "0.16.0", default-features = false }
diff --git a/crates/uv-shell/src/windows.rs b/crates/uv-shell/src/windows.rs
index 818d5b999..4c3ddb0a4 100644
--- a/crates/uv-shell/src/windows.rs
+++ b/crates/uv-shell/src/windows.rs
@@ -8,8 +8,11 @@ use std::path::Path;
 
 use anyhow::Context;
 use tracing::warn;
-use windows::Win32::Foundation::{ERROR_FILE_NOT_FOUND, ERROR_INVALID_DATA};
-use windows::core::HRESULT;
+use windows::Win32::Foundation::{ERROR_FILE_NOT_FOUND, ERROR_INVALID_DATA, LPARAM, WPARAM};
+use windows::Win32::UI::WindowsAndMessaging::{
+    HWND_BROADCAST, SMTO_ABORTIFHUNG, SendMessageTimeoutW, WM_SETTINGCHANGE,
+};
+use windows::core::{HRESULT, w};
 use windows_registry::{CURRENT_USER, HSTRING};
 
 use uv_static::EnvVars;
@@ -46,9 +49,35 @@ fn apply_windows_path_var(path: &HSTRING) -> anyhow::Result<()> {
         environment.set_expand_hstring(EnvVars::PATH, path)?;
     }
 
+    // Notify WM_SETTINGCHANGE listeners
+    broadcast_environment_changes();
+
     Ok(())
 }
 
+/// Broadcast `WM_SETTINGCHANGE` to notify listeners about environment changes.
+///
+/// SAFETY: `SendMessageTimeoutW` is safe to call with these set of parameters.
+/// When modifying environment variables we need to broadcast a `WM_SETTINGCHANGE`
+/// message with lparam set to the string "Environment" to allow processes such
+/// as conhost.exe to pick up the changes made on new sessions.
+///
+/// See <https://learn.microsoft.com/en-us/windows/win32/procthread/environment-variables>
+#[allow(unsafe_code)]
+fn broadcast_environment_changes() {
+    unsafe {
+        SendMessageTimeoutW(
+            HWND_BROADCAST,
+            WM_SETTINGCHANGE,
+            WPARAM(0),
+            LPARAM(w!("Environment").as_ptr() as isize), // null terminated
+            SMTO_ABORTIFHUNG,
+            5000,
+            None,
+        );
+    }
+}
+
 /// Retrieve the windows `PATH` variable from the registry.
 ///
 /// Returns `Ok(None)` if the `PATH` variable is not a string.