diff --git a/.travis.yml b/.travis.yml
index 5b124df..94f1ce8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -30,7 +30,7 @@ matrix:
         - DEBUG_LINK=1
       before_script:
         - sed -i '/hidapi/d' "vendor/python-trezor/requirements.txt"
-        - pip install --user --requirement "vendor/python-trezor/requirements.txt" rlp pytest
+        - pip install --user --requirement "vendor/python-trezor/requirements.txt" rlp pytest requests[security]
         - pip install --user --no-deps "vendor/python-trezor"
       script:
         - script/cibuild