diff --git a/python/sphinx_rust/directives/crate.py b/python/sphinx_rust/directives/crate.py
index 96ec90c..1d4d163 100644
--- a/python/sphinx_rust/directives/crate.py
+++ b/python/sphinx_rust/directives/crate.py
@@ -67,6 +67,7 @@ def run(self) -> list[nodes.Node]:
         root += nodes.paragraph("", f"Version: {crate.version}")
 
         desc = addnodes.desc()
+        desc["objtype"] = f"{self.rust_domain.name}:crate"
         root += desc
         signature = addnodes.desc_signature(crate.name, f"pub mod {crate.name};")
         desc += signature
diff --git a/python/sphinx_rust/directives/enum.py b/python/sphinx_rust/directives/enum.py
index 7930f3d..2cd5b0f 100644
--- a/python/sphinx_rust/directives/enum.py
+++ b/python/sphinx_rust/directives/enum.py
@@ -49,6 +49,7 @@ def run(self) -> list[nodes.Node]:
         desc = addnodes.desc()
         root += desc
         if enum.variants:
+            desc["objtype"] = f"{self.rust_domain.name}:struct"
             sig_lines = [addnodes.desc_signature_line("", f"pub struct {enum.name} {{")]
             for var in enum.variants:
                 # TODO types
@@ -61,6 +62,7 @@ def run(self) -> list[nodes.Node]:
             signature = addnodes.desc_signature(enum.path_str, "", *sig_lines)
             signature["is_multiline"] = True
         else:
+            desc["objtype"] = f"{self.rust_domain.name}:enum"
             signature = addnodes.desc_signature(
                 enum.path_str, f"pub enum {enum.name} {{}}"
             )
diff --git a/python/sphinx_rust/directives/function.py b/python/sphinx_rust/directives/function.py
index 43de8d2..83b6761 100644
--- a/python/sphinx_rust/directives/function.py
+++ b/python/sphinx_rust/directives/function.py
@@ -46,6 +46,7 @@ def run(self) -> list[nodes.Node]:
         root = nodes.Element()
 
         desc = addnodes.desc()
+        desc["objtype"] = f"{self.rust_domain.name}:function"
         root += desc
         signature = addnodes.desc_signature(
             func.path_str,
diff --git a/python/sphinx_rust/directives/module.py b/python/sphinx_rust/directives/module.py
index 5d0cebc..2c7990a 100644
--- a/python/sphinx_rust/directives/module.py
+++ b/python/sphinx_rust/directives/module.py
@@ -61,6 +61,9 @@ def run(self) -> list[nodes.Node]:
         root = nodes.Element()
 
         desc = addnodes.desc()
+
+        desc["objtype"] = f"{self.rust_domain.name}:module"
+
         root += desc
         signature = addnodes.desc_signature(module.path_str, f"pub mod {module.name};")
         desc += signature
diff --git a/python/sphinx_rust/directives/struct.py b/python/sphinx_rust/directives/struct.py
index 686215b..2177c07 100644
--- a/python/sphinx_rust/directives/struct.py
+++ b/python/sphinx_rust/directives/struct.py
@@ -48,6 +48,7 @@ def run(self) -> list[nodes.Node]:
         root = nodes.Element()
 
         desc = addnodes.desc()
+        desc["objtype"] = f"{self.rust_domain.name}:struct"
         root += desc
         if struct.fields:
             sig_lines = [