diff --git a/blame.py b/blame.py
index fa4f8d7..fb2b017 100644
--- a/blame.py
+++ b/blame.py
@@ -23,8 +23,8 @@ import comment
 import filtering
 import missing
 import multiprocessing
-import os
 import re
+import subprocess
 import sys
 import terminal
 import threading
@@ -49,10 +49,11 @@ class BlameThread(threading.Thread):
 		self.filename = filename
 
 	def run(self):
-		git_blame_r = os.popen(self.blame_string)
+		git_blame_r = subprocess.Popen(self.blame_string, shell=True, bufsize=1, stdout=subprocess.PIPE).stdout
 		is_inside_comment = False
 
 		for j in git_blame_r.readlines():
+			j = j.decode("utf-8", errors="replace")
 			if Blame.is_blame_line(j):
 				author = Blame.get_author(j)
 				content = Blame.get_content(j)
@@ -74,15 +75,17 @@ class BlameThread(threading.Thread):
 				self.blames[(author, self.filename)].rows += 1
 				__blame_lock__.release() # ...to here.
 
+		git_blame_r.close()
 		__thread_lock__.release() # Lock controlling the number of threads running
 
 class Blame:
 	def __init__(self, hard):
 		self.blames = {}
-		ls_tree_r = os.popen("git ls-tree --name-only -r HEAD")
+		ls_tree_r = subprocess.Popen("git ls-tree --name-only -r HEAD", shell=True, bufsize=1, stdout=subprocess.PIPE).stdout
 		lines = ls_tree_r.readlines()
 
 		for i, row in enumerate(lines):
+			row = row.decode("utf-8", errors="replace")
 			if FileDiff.is_valid_extension(row) and not filtering.set_filtered(FileDiff.get_filename(row)):
 				if not missing.add(row.strip()):
 					blame_string = "git blame -w {0} \"".format("-C -C -M" if hard else "") + row.strip() + "\""
diff --git a/changes.py b/changes.py
index 8b39d3b..50fdbf4 100644
--- a/changes.py
+++ b/changes.py
@@ -20,8 +20,9 @@
 from __future__ import print_function
 import extensions
 import filtering
-import os
 import re
+import os
+import subprocess
 import terminal
 
 class FileDiff:
@@ -86,13 +87,15 @@ class AuthorInfo:
 class Changes:
 	def __init__(self, hard):
 		self.commits = []
-		git_log_r = os.popen("git log --pretty='%ad|%t|%aN|%s' --stat=100000,8192 --no-merges -w " +
-		                     "{0} --date=short".format("-C -C -M" if hard else ""))
+		git_log_r = subprocess.Popen("git log --pretty='%ad|%t|%aN|%s' --stat=100000,8192 --no-merges -w " +
+		                             "{0} --date=short".format("-C -C -M" if hard else ""),
+		                             shell=True, bufsize=1, stdout=subprocess.PIPE).stdout
 		commit = None
 		found_valid_extension = False
 		lines = git_log_r.readlines()
 
 		for i in lines:
+			i = i.decode("utf-8", errors="replace")
 			if Commit.is_commit_line(i) or i == lines[-1]:
 				if found_valid_extension:
 					self.commits.append(commit)
diff --git a/metrics.py b/metrics.py
index 397d725..ea7bc1f 100644
--- a/metrics.py
+++ b/metrics.py
@@ -22,7 +22,7 @@ from changes import FileDiff
 import comment
 import filtering
 import missing
-import os
+import subprocess
 
 __metric_eloc__ = {"java": 500, "c": 500, "cpp": 500, "h": 300, "hpp": 300, "py": 500, "glsl": 1000,
                    "rb": 500, "js": 500, "sql": 1000, "xml": 1000}
@@ -30,12 +30,13 @@ __metric_eloc__ = {"java": 500, "c": 500, "cpp": 500, "h": 300, "hpp": 300, "py"
 class Metrics:
 	def __init__(self):
 		self.eloc = {}
-		ls_tree_r = os.popen("git ls-tree --name-only -r HEAD")
+		ls_tree_r = subprocess.Popen("git ls-tree --name-only -r HEAD", shell=True, bufsize=1, stdout=subprocess.PIPE).stdout
 
 		for i in ls_tree_r.readlines():
+			i = i.decode("utf-8", errors="replace")
 			if FileDiff.is_valid_extension(i) and not filtering.set_filtered(FileDiff.get_filename(i)):
 				if not missing.add(i.strip()):
-					file_r = open(i.strip(), "r")
+					file_r = open(i.strip(), "rb")
 					extension = FileDiff.get_extension(i)
 					lines = Metrics.get_eloc(file_r, extension)
 
@@ -48,6 +49,7 @@ class Metrics:
 		eloc_counter = 0
 
 		for j in file_r.readlines():
+			j = j.decode("utf-8", errors="replace")
 			if is_inside_comment and comment.has_comment_end(extension, j):
 				is_inside_comment = False
 			elif comment.has_comment_begining(extension, j):
diff --git a/missing.py b/missing.py
index 1115790..2484902 100644
--- a/missing.py
+++ b/missing.py
@@ -19,6 +19,7 @@
 
 from __future__ import print_function
 import os
+import subprocess
 import terminal
 
 __checkout_missing__ = False
@@ -27,7 +28,7 @@ __missing_files__ =  set()
 def add(file_name):
 	if not os.path.exists(file_name):
 		if __checkout_missing__:
-			os.popen("git checkout \"" + file_name.strip() + "\"")
+			subprocess.call("git checkout \"" + file_name.strip() + "\"")
 		else:
 			__missing_files__.add(file_name)
 			return True