diff --git a/rust-pyo3-build-config.spec b/rust-pyo3-build-config.spec
index 0a778c9..ecc6b9d 100644
--- a/rust-pyo3-build-config.spec
+++ b/rust-pyo3-build-config.spec
@@ -29,6 +29,7 @@ Build configuration for the PyO3 ecosystem.}
 %package        devel
 Summary:        %{summary}
 BuildArch:      noarch
+Requires:       python3
 
 %description    devel %{_description}
 
diff --git a/rust2rpm.toml b/rust2rpm.toml
index 548ed21..f98e593 100644
--- a/rust2rpm.toml
+++ b/rust2rpm.toml
@@ -4,5 +4,6 @@ cargo-toml-patch-comments = [
 ]
 
 [requires]
+lib = ["python3"]
 test = ["python3"]