diff --git a/workspace_tools/build_release.py b/workspace_tools/build_release.py
index 5ed158bbc3..7088d16cb2 100755
--- a/workspace_tools/build_release.py
+++ b/workspace_tools/build_release.py
@@ -49,6 +49,7 @@ OFFICIAL_MBED_LIBRARY_BUILD = (
     ('KL25Z',        ('ARM', 'GCC_ARM')),
     ('KL46Z',        ('ARM', 'GCC_ARM')),
     ('K64F',         ('ARM', 'GCC_ARM')),
+    ('K22F',         ('ARM', 'GCC_ARM')),
     ('K20D50M',      ('ARM', 'GCC_ARM')),
 
     ('NUCLEO_F030R8', ('ARM', 'uARM')),