diff --git a/oslo_utils/timeutils.py b/oslo_utils/timeutils.py
index bc5db0b3..47859a75 100644
--- a/oslo_utils/timeutils.py
+++ b/oslo_utils/timeutils.py
@@ -23,13 +23,7 @@ import time
 
 from debtcollector import removals
 import iso8601
-try:
-    from monotonic import monotonic as now  # noqa
-except RuntimeError:
-    try:
-        now = time.monotonic
-    except AttributeError:
-        now = time.time
+from monotonic import monotonic as now  # noqa
 from pytz import timezone
 import six
 
diff --git a/requirements.txt b/requirements.txt
index 2ad59867..586e6329 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ Babel>=1.3
 six>=1.9.0
 iso8601>=0.1.9
 oslo.i18n>=1.5.0 # Apache-2.0
-monotonic>=0.1 # Apache-2.0
+monotonic>=0.3 # Apache-2.0
 pytz>=2013.6
 netaddr>=0.7.12
 netifaces>=0.10.4