diff --git a/platform/runner/extension/std/sys/src/main/resources/std/sys/extension.lua b/platform/runner/extension/std/sys/src/main/resources/std/sys/extension.lua
index 011b9aae32..b43ece4695 100644
--- a/platform/runner/extension/std/sys/src/main/resources/std/sys/extension.lua
+++ b/platform/runner/extension/std/sys/src/main/resources/std/sys/extension.lua
@@ -181,6 +181,21 @@ function extension_create()
             return err, resp
         end
 
+        function instance.func.update(req)
+            req = req or {}
+            local err, resp = handle_response(http.patch({
+                url = '/v1/funcs/' .. req.id,
+                headers = { ['x-exec-token'] = context.exec.token },
+                body = {
+                    name = req.name or nil,
+                    inputs = req.inputs or {},
+                    code = req.code or nil
+                }
+            }))
+
+            return err, resp.content
+        end
+
         function instance.namespace.append(req)
             req = req or {}
             local namespace_id = req.namespace_id or exec_namespace_id
diff --git a/platform/testbed/src/integrationTest/resources/api/func/update/nothing_to_update/01.lua b/platform/testbed/src/integrationTest/resources/api/func/update/nothing_to_update/01.lua
index 33ebc5700d..741c5e918a 100644
--- a/platform/testbed/src/integrationTest/resources/api/func/update/nothing_to_update/01.lua
+++ b/platform/testbed/src/integrationTest/resources/api/func/update/nothing_to_update/01.lua
@@ -1,18 +1,20 @@
-sys = require_plugin('std.sys')
+sys = require('std.sys').create({
+    base_url = context.env.api_host
+})
 
-local func_req = fail_on_error(sys.funcs.create({
+local func_req = fail_on_error(sys.func.create({
     name = 'created-name',
     inputs = { },
     code = 'created-code'
 }))
 sys.await_completed(func_req)
 
-update_req = fail_on_error(sys.funcs.update({
+update_req = fail_on_error(sys.func.update({
     id = func_req.id
 }))
 sys.await_completed(update_req)
 
-func_one = fail_on_error(sys.funcs.get(func_req.id))
+func_one = fail_on_error(sys.func.get(func_req.id))
 assert(func_one.name == 'created-name')
 assert(func_one.code.version == 1)
 assert(func_one.code.value == 'created-code')
diff --git a/platform/testbed/src/integrationTest/resources/api/func/update/updated/01.lua b/platform/testbed/src/integrationTest/resources/api/func/update/updated/01.lua
index efb215dbda..9d221b2b52 100644
--- a/platform/testbed/src/integrationTest/resources/api/func/update/updated/01.lua
+++ b/platform/testbed/src/integrationTest/resources/api/func/update/updated/01.lua
@@ -1,20 +1,21 @@
-sys = require_plugin('std.sys')
-
-local func_req = fail_on_error(sys.funcs.create({
+sys = require('std.sys').create({
+    base_url = context.env.api_host
+})
+local func_req = fail_on_error(sys.func.create({
     name = 'created-name',
     inputs = { },
     code = 'created-code'
 }))
 sys.await_completed(func_req)
 
-update_req = fail_on_error(sys.funcs.update({
+update_req = fail_on_error(sys.func.update({
     id = func_req.id,
     name = 'updated-name',
     code = 'updated-code'
 }))
 sys.await_completed(update_req)
 
-func_one = fail_on_error(sys.funcs.get(func_req.id))
+func_one = fail_on_error(sys.func.get(func_req.id))
 assert(func_one.name == 'updated-name')
 assert(func_one.code.version == 2)
 assert(func_one.code.value == 'updated-code')