diff --git a/datacube/drivers/postgres/_connections.py b/datacube/drivers/postgres/_connections.py
index c5a9602d0c..58033fa92f 100755
--- a/datacube/drivers/postgres/_connections.py
+++ b/datacube/drivers/postgres/_connections.py
@@ -27,7 +27,6 @@
 import datacube
 from datacube.index.exceptions import IndexSetupError
 from datacube.utils import jsonify_document
-from datacube.utils.aws import obtain_new_iam_auth_token
 
 from . import _api
 from . import _core
@@ -136,6 +135,7 @@ def _create_engine(url, application_name=None, iam_rds_auth=False, iam_rds_timeo
         )
 
         if iam_rds_auth:
+            from datacube.utils.aws import obtain_new_iam_auth_token
             handle_dynamic_token_authentication(engine, obtain_new_iam_auth_token, timeout=iam_rds_timeout, url=url)
 
         return engine