diff --git a/CHANGELOG.md b/CHANGELOG.md
index 238bf19b..cc58874d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.20.2] - 2024-07-02
+
+### Fixed
+- conftest: Fixed '--device all' conftest option
+
 ## [1.20.1] - 2024-06-19
 
 ### Fixed
diff --git a/src/ragger/conftest/base_conftest.py b/src/ragger/conftest/base_conftest.py
index 2f47ead8..a61aa6e6 100644
--- a/src/ragger/conftest/base_conftest.py
+++ b/src/ragger/conftest/base_conftest.py
@@ -129,7 +129,7 @@ def pytest_generate_tests(metafunc):
 
 def prepare_speculos_args(root_pytest_dir: Path, firmware: Firmware, display: bool,
                           cli_user_seed: str, additional_args: List[str]):
-    speculos_args = additional_args
+    speculos_args = additional_args.copy()
 
     if display:
         speculos_args += ["--display", "qt"]