diff --git a/include/Makefile.in b/include/Makefile.in
index b89225510e9..ae551abd4c0 100644
--- a/include/Makefile.in
+++ b/include/Makefile.in
@@ -755,6 +755,7 @@ SOURCES = \
 	wbemdisp.idl \
 	wbemprov.idl \
 	wct.h \
+	weakreference.idl \
 	webservices.h \
 	werapi.h \
 	wfext.h \
diff --git a/include/weakreference.idl b/include/weakreference.idl
new file mode 100644
index 00000000000..fb5b95bf2ce
--- /dev/null
+++ b/include/weakreference.idl
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2022 Rémi Bernon for CodeWeavers
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+import "inspectable.idl";
+
+[
+    object,
+    uuid(00000037-0000-0000-c000-000000000046),
+    pointer_default(unique)
+]
+interface IWeakReference : IUnknown
+{
+    HRESULT Resolve([in] REFIID iid,  [out, retval, iid_is(iid)] IInspectable **ref);
+}
+
+[
+    object,
+    uuid(00000038-0000-0000-c000-000000000046),
+    pointer_default(unique)
+]
+interface IWeakReferenceSource : IUnknown
+{
+    HRESULT GetWeakReference([out, retval] IWeakReference **ref);
+}