diff --git a/python-tox.spec b/python-tox.spec
index 657f556..63a565c 100644
--- a/python-tox.spec
+++ b/python-tox.spec
@@ -71,6 +71,7 @@ BuildRequires:  python3-packaging
 BuildRequires:  python3-pathlib2
 BuildRequires:  python3-pip
 BuildRequires:  python3-pluggy >= 0.12
+BuildRequires:  python3-poetry
 BuildRequires:  python3-psutil
 BuildRequires:  python3-py
 BuildRequires:  python3-pytest
@@ -81,7 +82,10 @@ BuildRequires:  python3-toml
 BuildRequires:  python3-virtualenv
 BuildRequires:  python3-wheel
 BuildRequires:  (python3-importlib-metadata if python3 < 3.8)
+BuildRequires:  /usr/bin/gcc
 BuildRequires:  /usr/bin/git
+BuildRequires:  /usr/bin/poetry
+BuildRequires:  libffi-devel
 %endif
 
 %?python_enable_dependency_generator