diff --git a/hts/HTS.py b/hts/HTS.py
index c80ae9d..474f759 100644
--- a/hts/HTS.py
+++ b/hts/HTS.py
@@ -431,7 +431,7 @@ class HTS:
         return
 
     def getCSV(self, fileName, given_day, result):
-        with open(fileName, 'r') as infp:
+        with open(fileName, 'r', encoding='utf-8') as infp:
             reader = csv.reader(infp)
             next(reader)
 
diff --git a/hts/Simulation.py b/hts/Simulation.py
index d467adb..421aabe 100644
--- a/hts/Simulation.py
+++ b/hts/Simulation.py
@@ -20,7 +20,7 @@ class Simulation:
         return
 
     def getCSV(self, fileName, given_day, result):
-        with open(fileName, 'r') as infp:
+        with open(fileName, 'r', encoding='utf-8') as infp:
             reader = csv.reader(infp)
             next(reader)