diff --git a/glib-macros/src/boxed_derive.rs b/glib-macros/src/boxed_derive.rs
index 8abd4fd08f0b..f70a89ac1bea 100644
--- a/glib-macros/src/boxed_derive.rs
+++ b/glib-macros/src/boxed_derive.rs
@@ -184,6 +184,8 @@ pub fn impl_boxed(input: &syn::DeriveInput) -> syn::Result<TokenStream> {
 
         #impl_from_value
 
+        unsafe impl #crate_ident::translate::TransparentPtrType for #name {}
+
         impl #crate_ident::translate::GlibPtrDefault for #name {
             type GlibType = *mut #name;
         }
diff --git a/glib-macros/tests/test.rs b/glib-macros/tests/test.rs
index c33487af5921..21fb1512bee8 100644
--- a/glib-macros/tests/test.rs
+++ b/glib-macros/tests/test.rs
@@ -1,6 +1,7 @@
 // Take a look at the license at the top of the repository in the LICENSE file.
 
 use glib::{
+    collections::PtrSlice,
     prelude::*,
     translate::{FromGlib, IntoGlib},
 };
@@ -183,6 +184,22 @@ fn derive_boxed_nullable() {
     assert_eq!(None, v.get::<Option<MyNullableBoxed>>().unwrap());
 }
 
+#[test]
+fn boxed_transparent_ptr() {
+    #[derive(Clone, Debug, PartialEq, Eq, glib::Boxed)]
+    #[boxed_type(name = "MyBoxed")]
+    struct MyBoxed(String);
+
+    let vec = vec![MyBoxed(String::from("abc")), MyBoxed(String::from("dfg"))];
+
+    // PtrSlice requires TransparentPtrType trait
+    let ptr_slice = PtrSlice::from(vec);
+    assert_eq!(
+        ptr_slice.last(),
+        Some(MyBoxed(String::from("dfg"))).as_ref()
+    );
+}
+
 #[test]
 fn attr_flags() {
     #[glib::flags(name = "MyFlags")]