diff --git a/.travis.yml b/.travis.yml
index 0820c4f99..0296fb4c0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -25,11 +25,14 @@ addons:
     - gcc-multilib
     - gcc-arm-none-eabi
     - libnewlib-arm-none-eabi
+    - libusb-1.0-0-dev
+    - libudev-dev
 
 install:
     - pip3 install ed25519 pyblake2
     - pip3 install flake8
     - pip3 install ecdsa mnemonic protobuf requests
+    - pip3 install trezor
 
 script:
   - test "$GOAL" != "stm32" || make vendorheader
diff --git a/tests/run_tests_python_trezor.sh b/tests/run_tests_python_trezor.sh
index 26ca9a694..0d2f1a986 100755
--- a/tests/run_tests_python_trezor.sh
+++ b/tests/run_tests_python_trezor.sh
@@ -15,7 +15,6 @@ UPY_PID=$!
 sleep 1
 
 cd ../tests/python-trezor/tests/device_tests
-export PYTHONPATH="../.."
 
 error=0