diff --git a/gui/kivy/Makefile b/gui/kivy/Makefile
index 766cd134..7d4e82b1 100644
--- a/gui/kivy/Makefile
+++ b/gui/kivy/Makefile
@@ -1,4 +1,5 @@
 PYTHON = python
+
 # needs kivy installed or in PYTHONPATH
 
 .PHONY: theming apk clean
@@ -17,11 +18,11 @@ prepare:
 	fi
 apk:
 	@make prepare
-	@-cd ../..; buildozer android debug deploy run
+	@-cd ../..; buildozer android_new debug deploy run
 	@make clean
 release:
 	@make prepare
-	@-cd ../..; buildozer android release
+	@-cd ../..; buildozer android_new release
 	@make clean
 clean:
 	# Cleaning up
diff --git a/gui/kivy/main_window.py b/gui/kivy/main_window.py
index eb51fe8d..32914b09 100644
--- a/gui/kivy/main_window.py
+++ b/gui/kivy/main_window.py
@@ -310,7 +310,7 @@ class ElectrumWindow(App):
             return
         from jnius import autoclass
         from android import activity
-        PythonActivity = autoclass('org.renpy.android.PythonActivity')
+        PythonActivity = autoclass('org.kivy.android.PythonActivity')
         Intent = autoclass('android.content.Intent')
         intent = Intent("com.google.zxing.client.android.SCAN")
         intent.putExtra("SCAN_MODE", "QR_CODE_MODE")
@@ -334,7 +334,7 @@ class ElectrumWindow(App):
             return
         from jnius import autoclass
         from android import activity
-        PythonActivity = autoclass('org.renpy.android.PythonActivity')
+        PythonActivity = autoclass('org.kivy.android.PythonActivity')
         IntentIntegrator = autoclass('com.google.zxing.integration.android.IntentIntegrator')
         integrator = IntentIntegrator(PythonActivity.mActivity)
         def on_qr_result(requestCode, resultCode, intent):
@@ -370,7 +370,7 @@ class ElectrumWindow(App):
         if platform == 'android':
             # move activity to back
             from jnius import autoclass
-            python_act = autoclass('org.renpy.android.PythonActivity')
+            python_act = autoclass('org.kivy.android.PythonActivity')
             mActivity = python_act.mActivity
             mActivity.moveTaskToBack(True)
 
@@ -394,7 +394,7 @@ class ElectrumWindow(App):
         if platform == 'android':
             from android import activity
             from jnius import autoclass
-            PythonActivity = autoclass('org.renpy.android.PythonActivity')
+            PythonActivity = autoclass('org.kivy.android.PythonActivity')
             mactivity = PythonActivity.mActivity
             self.on_new_intent(mactivity.getIntent())
             activity.bind(on_new_intent=self.on_new_intent)
diff --git a/gui/kivy/nfc_scanner/scanner_android.py b/gui/kivy/nfc_scanner/scanner_android.py
index 5ca87fa1..36c638c5 100644
--- a/gui/kivy/nfc_scanner/scanner_android.py
+++ b/gui/kivy/nfc_scanner/scanner_android.py
@@ -17,7 +17,7 @@ from android import activity
 
 BUILDVERSION = autoclass('android.os.Build$VERSION').SDK_INT
 NfcAdapter = autoclass('android.nfc.NfcAdapter')
-PythonActivity = autoclass('org.renpy.android.PythonActivity')
+PythonActivity = autoclass('org.kivy.android.PythonActivity')
 JString = autoclass('java.lang.String')
 Charset = autoclass('java.nio.charset.Charset')
 locale = autoclass('java.util.Locale')
diff --git a/gui/kivy/tools/buildozer.spec.sample b/gui/kivy/tools/buildozer.spec.sample
index 6568b295..7830552b 100644
--- a/gui/kivy/tools/buildozer.spec.sample
+++ b/gui/kivy/tools/buildozer.spec.sample
@@ -31,7 +31,7 @@ version.filename = %(source.dir)s/lib/version.py
 #version = 1.9.8
 
 # (list) Application requirements
-requirements = openssl, pil, plyer==master, kivy==master
+requirements = hostpython2, android, openssl, pycrypto, pil, plyer, kivy==master
 
 # (str) Presplash of the application
 #presplash.filename = %(source.dir)s/gui/kivy/theming/splash.png
diff --git a/lib/bitcoin.py b/lib/bitcoin.py
index d6c153cf..a3dd2095 100644
--- a/lib/bitcoin.py
+++ b/lib/bitcoin.py
@@ -208,7 +208,9 @@ def i2o_ECPublicKey(pubkey, compressed=False):
 ############ functions from pywallet #####################
 
 def hash_160(public_key):
-    md = hashlib.new('ripemd160')
+    #md = hashlib.new('ripemd')
+    from Crypto.Hash import RIPEMD
+    md = RIPEMD.new()
     md.update(sha256(public_key))
     return md.digest()
 
diff --git a/lib/util.py b/lib/util.py
index 508188ee..44aef228 100644
--- a/lib/util.py
+++ b/lib/util.py
@@ -210,7 +210,7 @@ def android_ext_dir():
 
 def android_data_dir():
     import jnius
-    PythonActivity = jnius.autoclass('org.renpy.android.PythonActivity')
+    PythonActivity = jnius.autoclass('org.kivy.android.PythonActivity')
     return PythonActivity.mActivity.getFilesDir().getPath() + '/data'
 
 def android_headers_path():