diff --git a/mlir/include/mlir/Bindings/Python/Nanobind.h b/mlir/include/mlir/Bindings/Python/Nanobind.h
index ca942c83d3e2f..8dc8a0d063d70 100644
--- a/mlir/include/mlir/Bindings/Python/Nanobind.h
+++ b/mlir/include/mlir/Bindings/Python/Nanobind.h
@@ -30,6 +30,7 @@
 #include <nanobind/stl/string_view.h>
 #include <nanobind/stl/tuple.h>
 #include <nanobind/stl/vector.h>
+#include <nanobind/typing.h>
 #if defined(__clang__) || defined(__GNUC__)
 #pragma GCC diagnostic pop
 #endif
diff --git a/mlir/lib/Bindings/Python/MainModule.cpp b/mlir/lib/Bindings/Python/MainModule.cpp
index a14f09f77d2c3..ba767ad6692cf 100644
--- a/mlir/lib/Bindings/Python/MainModule.cpp
+++ b/mlir/lib/Bindings/Python/MainModule.cpp
@@ -24,6 +24,8 @@ using namespace mlir::python;
 
 NB_MODULE(_mlir, m) {
   m.doc() = "MLIR Python Native Extension";
+  m.attr("T") = nb::type_var("T");
+  m.attr("U") = nb::type_var("U");
 
   nb::class_<PyGlobals>(m, "_Globals")
       .def_prop_rw("dialect_search_modules",
@@ -102,6 +104,10 @@ NB_MODULE(_mlir, m) {
               return opClass;
             });
       },
+      // clang-format off
+      nb::sig("def register_operation(dialect_class: type, *, replace: bool = False) "
+        "-> typing.Callable[[type[T]], type[T]]"),
+      // clang-format on
       "dialect_class"_a, nb::kw_only(), "replace"_a = false,
       "Produce a class decorator for registering an Operation class as part of "
       "a dialect");
@@ -114,6 +120,10 @@ NB_MODULE(_mlir, m) {
           return typeCaster;
         });
       },
+      // clang-format off
+      nb::sig("def register_type_caster(typeid: _mlir.ir.TypeID, *, replace: bool = False) "
+                        "-> typing.Callable[[typing.Callable[[T], U]], typing.Callable[[T], U]]"),
+      // clang-format on
       "typeid"_a, nb::kw_only(), "replace"_a = false,
       "Register a type caster for casting MLIR types to custom user types.");
   m.def(
@@ -126,6 +136,10 @@ NB_MODULE(_mlir, m) {
               return valueCaster;
             });
       },
+      // clang-format off
+      nb::sig("def register_value_caster(typeid: _mlir.ir.TypeID, *, replace: bool = False) "
+                        "-> typing.Callable[[typing.Callable[[T], U]], typing.Callable[[T], U]]"),
+      // clang-format on
       "typeid"_a, nb::kw_only(), "replace"_a = false,
       "Register a value caster for casting MLIR values to custom user values.");