diff --git a/data/org.freedesktop.portal.OpenURI.xml b/data/org.freedesktop.portal.OpenURI.xml
index dd1d326a0..aeb0713d4 100644
--- a/data/org.freedesktop.portal.OpenURI.xml
+++ b/data/org.freedesktop.portal.OpenURI.xml
@@ -29,7 +29,7 @@
        URIs (e.g. a http: link to the applications homepage)
        under the control of the user.
 
-       This documentation describes version 4 of this interface.
+       This documentation describes version 5 of this interface.
   -->
   <interface name="org.freedesktop.portal.OpenURI">
     <!--
@@ -163,6 +163,24 @@
       <arg type="o" name="handle" direction="out"/>
     </method>
 
+    <!--
+        SchemeSupported:
+        @scheme: The URI protocol scheme to check
+        @options: Vardict with optional further information
+        @supported: True if the URI scheme is supported
+
+        Checks if OpenURI supports the protocol scheme @scheme.
+
+        The @options vardict currently has no supported entries.
+
+        The SchemeSupported method was introduced in version 5 of the OpenURI portal API.
+    -->
+    <method name="SchemeSupported">
+      <arg type="s" name="scheme" direction="in"/>
+      <arg type="a{sv}" name="options" direction="in"/>
+      <arg type="b" name="supported" direction="out"/>
+    </method>
+
     <property name="version" type="u" access="read"/>
   </interface>
 </node>
diff --git a/src/open-uri.c b/src/open-uri.c
index 2b106657e..da46d909d 100644
--- a/src/open-uri.c
+++ b/src/open-uri.c
@@ -925,6 +925,31 @@ handle_open_in_thread_func (GTask *task,
                                                      g_object_ref (request));
 }
 
+static gboolean
+handle_scheme_supported (XdpDbusOpenURI *object,
+                         GDBusMethodInvocation *invocation,
+                         const gchar *arg_scheme,
+                         GVariant *arg_options)
+{
+  g_autoptr(GAppInfo) app_info = NULL;
+
+  if (arg_scheme == NULL || *arg_scheme == '\0')
+    {
+      g_dbus_method_invocation_return_error (invocation,
+                                             XDG_DESKTOP_PORTAL_ERROR,
+                                             XDG_DESKTOP_PORTAL_ERROR_INVALID_ARGUMENT,
+                                             "Scheme not specified");
+      return G_DBUS_METHOD_INVOCATION_HANDLED;
+    }
+
+  app_info = g_app_info_get_default_for_uri_scheme (arg_scheme);
+
+  g_debug ("Handler for scheme: %s%s found.", arg_scheme, app_info ? "" : " not");
+  g_dbus_method_invocation_return_value (invocation, g_variant_new ("(b)", app_info != NULL));
+
+  return G_DBUS_METHOD_INVOCATION_HANDLED;
+}
+
 static gboolean
 handle_open_uri (XdpDbusOpenURI *object,
                  GDBusMethodInvocation *invocation,
@@ -1094,12 +1119,13 @@ open_uri_iface_init (XdpDbusOpenURIIface *iface)
   iface->handle_open_uri = handle_open_uri;
   iface->handle_open_file = handle_open_file;
   iface->handle_open_directory = handle_open_directory;
+  iface->handle_scheme_supported = handle_scheme_supported;
 }
 
 static void
 open_uri_init (OpenURI *openuri)
 {
-  xdp_dbus_open_uri_set_version (XDP_DBUS_OPEN_URI (openuri), 4);
+  xdp_dbus_open_uri_set_version (XDP_DBUS_OPEN_URI (openuri), 5);
 }
 
 static void
diff --git a/tests/openuri.c b/tests/openuri.c
index b78b37eaf..4e7f16701 100644
--- a/tests/openuri.c
+++ b/tests/openuri.c
@@ -5,6 +5,7 @@
 #include <libportal/portal.h>
 #include "xdp-utils.h"
 #include "xdp-impl-dbus.h"
+#include "xdp-dbus.h"
 
 #include "utils.h"
 
@@ -478,3 +479,56 @@ test_open_directory (void)
   while (!got_info)
     g_main_context_iteration (NULL, TRUE);
 }
+
+void
+test_scheme_supported (void)
+{
+  gboolean supported;
+  GVariantBuilder builder;
+  g_autoptr(GError) error = NULL;
+  g_autoptr(GVariant) options = NULL;
+  g_autoptr(GDBusConnection) session_bus = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, &error);
+
+  XdpDbusOpenURI *proxy = xdp_dbus_open_uri_proxy_new_sync (session_bus,
+                                                            G_DBUS_PROXY_FLAGS_NONE,
+                                                            "org.freedesktop.portal.Desktop",
+                                                            "/org/freedesktop/portal/desktop",
+                                                            NULL,
+                                                            &error);
+
+  g_assert_no_error (error);
+
+  g_variant_builder_init (&builder, G_VARIANT_TYPE_VARDICT);
+  options = g_variant_ref_sink (g_variant_builder_end (&builder));
+  /* Existing scheme */
+  xdp_dbus_open_uri_call_scheme_supported_sync (proxy,
+                                                "https",
+                                                options,
+                                                &supported,
+                                                NULL,
+                                                &error);
+  g_assert_no_error (error);
+  g_assert_true (supported);
+
+  /* Non existing scheme */
+  xdp_dbus_open_uri_call_scheme_supported_sync (proxy,
+                                                "bogusnonexistanthandler",
+                                                options,
+                                                &supported,
+                                                NULL,
+                                                &error);
+  g_assert_no_error (error);
+  g_assert_false (supported);
+
+  /* Missing scheme name */
+  xdp_dbus_open_uri_call_scheme_supported_sync (proxy,
+                                                "",
+                                                options,
+                                                &supported,
+                                                NULL,
+                                                &error);
+  g_assert_error (error,
+                  XDG_DESKTOP_PORTAL_ERROR,
+                  XDG_DESKTOP_PORTAL_ERROR_INVALID_ARGUMENT);
+  g_object_unref (proxy);
+}
diff --git a/tests/openuri.h b/tests/openuri.h
index f5dcf87db..c6e19ba78 100644
--- a/tests/openuri.h
+++ b/tests/openuri.h
@@ -8,3 +8,4 @@ void test_open_uri_close (void);
 void test_open_uri_cancel (void);
 void test_open_uri_lockdown (void);
 void test_open_directory (void);
+void test_scheme_supported (void);
diff --git a/tests/test-portals.c b/tests/test-portals.c
index 8fd78ea78..8fcaf8e76 100644
--- a/tests/test-portals.c
+++ b/tests/test-portals.c
@@ -448,7 +448,7 @@ DEFINE_TEST_EXISTS(inhibit, INHIBIT, 3)
 DEFINE_TEST_EXISTS(location, LOCATION, 1)
 DEFINE_TEST_EXISTS(network_monitor, NETWORK_MONITOR, 3)
 DEFINE_TEST_EXISTS(notification, NOTIFICATION, 1)
-DEFINE_TEST_EXISTS(open_uri, OPEN_URI, 4)
+DEFINE_TEST_EXISTS(open_uri, OPEN_URI, 5)
 DEFINE_TEST_EXISTS(print, PRINT, 3)
 DEFINE_TEST_EXISTS(proxy_resolver, PROXY_RESOLVER, 1)
 DEFINE_TEST_EXISTS(screenshot, SCREENSHOT, 2)
@@ -585,6 +585,7 @@ main (int argc, char **argv)
   g_test_add_func ("/portal/openuri/cancel", test_open_uri_cancel);
   g_test_add_func ("/portal/openuri/lockdown", test_open_uri_lockdown);
   g_test_add_func ("/portal/openuri/directory", test_open_directory);
+  g_test_add_func ("/portal/openuri/scheme-supported", test_scheme_supported);
 
   g_test_add_func ("/portal/wallpaper/basic", test_wallpaper_basic);
   g_test_add_func ("/portal/wallpaper/delay", test_wallpaper_delay);