diff --git a/.gitignore b/.gitignore
index 1b372c9..6757a23 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 Eduponics/__pycache__/*
 dist/*
+micropython_eduponics.egg-info/*
diff --git a/Eduponics/__init__.py b/Eduponics/__init__.py
index 92192ee..68cdeee 100644
--- a/Eduponics/__init__.py
+++ b/Eduponics/__init__.py
@@ -1 +1 @@
-__version__ = "1.0.4"
+__version__ = "1.0.5"
diff --git a/Eduponics/tds.py b/Eduponics/tds.py
index 75163ab..f06ff66 100644
--- a/Eduponics/tds.py
+++ b/Eduponics/tds.py
@@ -25,7 +25,7 @@
 
 import time
 from Eduponics import ads1x15
-from ulab import *
+from ulab import array,numerical
 from machine import I2C, Pin
 import time
 
@@ -72,7 +72,7 @@ def read(self):
             buffer = [value1,value2]
             self.overwrite_buffer(buffer)
             # turn the list into numpy array
-            double_buffer = numpy.array(self.values_buffer)
+            double_buffer = array(self.values_buffer)
             # run median_filter on the numpy array
             median_voltage = self.median_filter(double_buffer) * self.vref / 1024.0;
             # calculate voltage based on temperature compensation
@@ -85,4 +85,4 @@ def read(self):
             return 0
 
     def median_filter(self, data):
-        return numpy.mean(data)
+        return numerical.mean(data)