diff --git a/futurist/_utils.py b/futurist/_utils.py
index b200d90..94498b7 100644
--- a/futurist/_utils.py
+++ b/futurist/_utils.py
@@ -21,7 +21,12 @@ import sys
 import threading
 import traceback
 
-from monotonic import monotonic as now  # noqa
+try:
+    from monotonic import monotonic as now  # noqa
+except ImportError:
+    import time
+    now = time.monotonic
+
 import six
 
 try:
diff --git a/requirements.txt b/requirements.txt
index 777e49c..4f2ad36 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@
 
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
 six>=1.10.0 # MIT
-monotonic>=0.6 # Apache-2.0
+monotonic>=0.6;python_version<'3.3' # Apache-2.0
 futures>=3.0.0;python_version=='2.7' or python_version=='2.6' # BSD
 contextlib2>=0.4.0;python_version<'3.0' # PSF License
 PrettyTable<0.8,>=0.7.1 # BSD