diff --git a/tools/build_api.py b/tools/build_api.py
index 20ec02f4c4..52f39cec48 100755
--- a/tools/build_api.py
+++ b/tools/build_api.py
@@ -424,7 +424,8 @@ def get_mbed_official_release(version, profile=None):
             tuple(
                 [
                     TARGET_MAP[target].name,
-                    tuple(['ARM', 'GCC_ARM'])
+                    tuple(transform_release_toolchains(
+-                        TARGET_MAP[target], version))
                 ]
             ) for target in TARGET_NAMES \
                 if not profile or profile in TARGET_MAP[target].supported_application_profiles