diff --git a/geomagio/TimeseriesUtility.py b/geomagio/TimeseriesUtility.py
index c9b9d737fceac9710b2e931ad9f313b282610af8..41910bb0465946d2778f37ff98260ec9646e492f 100644
--- a/geomagio/TimeseriesUtility.py
+++ b/geomagio/TimeseriesUtility.py
@@ -1,4 +1,5 @@
 """Timeseries Utilities"""
+from builtins import range
 import numpy
 import obspy.core
 
diff --git a/geomagio/binlog/BinLogWriter.py b/geomagio/binlog/BinLogWriter.py
index 23927fc40b550f46ba36cedf0d886cbd8ff7375f..7cc0a02db15541e7cb5a46f5a912f64f3961496e 100644
--- a/geomagio/binlog/BinLogWriter.py
+++ b/geomagio/binlog/BinLogWriter.py
@@ -1,3 +1,4 @@
+from builtins import range
 
 import numpy
 from io import StringIO
diff --git a/geomagio/edge/RawInputClient.py b/geomagio/edge/RawInputClient.py
index 916b2495155d998453ddfb0498c3c4ab7c2a0898..5bcb7d7210a6a00703a9cdab4f517737682e67d9 100644
--- a/geomagio/edge/RawInputClient.py
+++ b/geomagio/edge/RawInputClient.py
@@ -1,3 +1,4 @@
+from builtins import range
 
 import socket  # noqa
 import struct
diff --git a/geomagio/iaga2002/IAGA2002Writer.py b/geomagio/iaga2002/IAGA2002Writer.py
index 2f03bdf2215f4636d2e1ff5c2d2c80b7c9dc5107..a0b84a151994717d5ecce727392eb26f7bed8b6c 100644
--- a/geomagio/iaga2002/IAGA2002Writer.py
+++ b/geomagio/iaga2002/IAGA2002Writer.py
@@ -1,4 +1,5 @@
 from __future__ import absolute_import
+from builtins import range
 
 from io import StringIO
 from datetime import datetime
diff --git a/geomagio/imfv283/IMFV283Parser.py b/geomagio/imfv283/IMFV283Parser.py
index 3f60941fd405dc001c4dc321f74ac1d8fb9c027d..8275cfc1df5d17c01ecdebe0dbb67f5311ddf63b 100644
--- a/geomagio/imfv283/IMFV283Parser.py
+++ b/geomagio/imfv283/IMFV283Parser.py
@@ -1,5 +1,6 @@
 """Parsing methods for the IMFV283 Format."""
 from __future__ import absolute_import
+from builtins import range
 
 import math
 import numpy
diff --git a/geomagio/pcdcp/PCDCPWriter.py b/geomagio/pcdcp/PCDCPWriter.py
index 1fbff2d0dc54c2e40d5b6e36e1deadd4a71d70bb..42e91b316c470d9eabc64698e70913438d1ff69d 100644
--- a/geomagio/pcdcp/PCDCPWriter.py
+++ b/geomagio/pcdcp/PCDCPWriter.py
@@ -1,4 +1,5 @@
 from __future__ import absolute_import
+from builtins import range
 
 import numpy
 from . import PCDCPParser
diff --git a/geomagio/temperature/TEMPWriter.py b/geomagio/temperature/TEMPWriter.py
index d2d8c21eab11abb959e8a715bb55ecde7e9b11d0..fd38d6fc07756854b557144c6379cafb296d0c41 100644
--- a/geomagio/temperature/TEMPWriter.py
+++ b/geomagio/temperature/TEMPWriter.py
@@ -1,3 +1,4 @@
+from builtins import range
 
 import numpy
 from io import StringIO
diff --git a/geomagio/vbf/VBFWriter.py b/geomagio/vbf/VBFWriter.py
index 9115ed0ffe80a0cd7293748877991e56785b9013..626d474d347b56d794bfc8c8d4a5f18e498c930f 100644
--- a/geomagio/vbf/VBFWriter.py
+++ b/geomagio/vbf/VBFWriter.py
@@ -1,3 +1,4 @@
+from builtins import range
 
 import numpy
 from io import StringIO