diff --git a/pyproject.toml b/pyproject.toml
index 4224f0bf3..8c0fbd33d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,7 @@ authors = ["SatoshiLabs <info@satoshilabs.com>"]
 [tool.poetry.dependencies]
 # all
 python = "^3.6"
-trezor = {path = "./python"}
+trezor = {path = "./python", develop = true}
 scons = "*"
 protobuf = "*"
 pyblake2 = "*"