diff --git a/tests/python-clikit.spec b/tests/python-clikit.spec
index f5c4c52..4be859d 100644
--- a/tests/python-clikit.spec
+++ b/tests/python-clikit.spec
@@ -10,6 +10,7 @@ Source0:        %{pypi_source}
 
 BuildArch:      noarch
 BuildRequires:  pyproject-rpm-macros
+BuildRequires:  python3-devel
 
 %description
 Tests building with the poetry build backend.
diff --git a/tests/python-entrypoints.spec b/tests/python-entrypoints.spec
index 4200ae4..bc0a024 100644
--- a/tests/python-entrypoints.spec
+++ b/tests/python-entrypoints.spec
@@ -9,6 +9,7 @@ Source0:        %{pypi_source}
 
 BuildArch:      noarch
 BuildRequires:  pyproject-rpm-macros
+BuildRequires:  python3-devel
 
 %description
 This package contains one .py module
diff --git a/tests/python-isort.spec b/tests/python-isort.spec
index cb1b582..e160b63 100644
--- a/tests/python-isort.spec
+++ b/tests/python-isort.spec
@@ -9,6 +9,7 @@ License:            MIT
 URL:                https://github.com/timothycrosley/%{modname}
 Source0:            %{url}/archive/%{version}-2/%{modname}-%{version}-2.tar.gz
 BuildArch:          noarch
+BuildRequires:      python3-devel
 BuildRequires:      pyproject-rpm-macros
 
 %description
diff --git a/tests/python-ldap.spec b/tests/python-ldap.spec
index 40a24a6..1aec33e 100644
--- a/tests/python-ldap.spec
+++ b/tests/python-ldap.spec
@@ -5,6 +5,7 @@ License:        Python
 Summary:        An object-oriented API to access LDAP directory servers
 Source0:        %{pypi_source}
 
+BuildRequires:  python3-devel
 BuildRequires:  pyproject-rpm-macros
 
 BuildRequires:  cyrus-sasl-devel
diff --git a/tests/python-mistune.spec b/tests/python-mistune.spec
index 14102df..9967d88 100644
--- a/tests/python-mistune.spec
+++ b/tests/python-mistune.spec
@@ -8,6 +8,7 @@ URL:            https://github.com/lepture/mistune
 Source0:        %{url}/archive/v%{version}.tar.gz
 
 BuildRequires:  gcc
+BuildRequires:  python3-devel
 BuildRequires:  pyproject-rpm-macros
 
 # optional dependency, listed explicitly to have the extension module:
diff --git a/tests/python-openqa_client.spec b/tests/python-openqa_client.spec
index 3150c8c..6e6dfbe 100644
--- a/tests/python-openqa_client.spec
+++ b/tests/python-openqa_client.spec
@@ -9,6 +9,7 @@ URL:            https://github.com/os-autoinst/openQA-python-client
 Source0:        %{pypi_source}
 
 BuildArch:      noarch
+BuildRequires:  python3-devel
 BuildRequires:  pyproject-rpm-macros
 
 %description
diff --git a/tests/python-pluggy.spec b/tests/python-pluggy.spec
index b772e26..4bbdd50 100644
--- a/tests/python-pluggy.spec
+++ b/tests/python-pluggy.spec
@@ -10,6 +10,7 @@ Source0:        %{pypi_source}
 
 BuildArch:      noarch
 BuildRequires:  pyproject-rpm-macros
+# we don't BR python3-devel here just for test purposes, but we recommend you do it
 
 %description
 A pure Python library. The package contains tox.ini. Does not contain executables.
diff --git a/tests/python-pytest.spec b/tests/python-pytest.spec
index 77e1585..c43bd2a 100644
--- a/tests/python-pytest.spec
+++ b/tests/python-pytest.spec
@@ -8,6 +8,7 @@ URL:            https://pytest.org
 Source0:        %{pypi_source}
 
 BuildArch:      noarch
+BuildRequires:  python3-devel
 BuildRequires:  pyproject-rpm-macros
 
 %description
diff --git a/tests/tldr.spec b/tests/tldr.spec
index e9e824e..f1371fc 100644
--- a/tests/tldr.spec
+++ b/tests/tldr.spec
@@ -8,6 +8,7 @@ URL:            https://github.com/tldr-pages/tldr-python-client
 Source0:        %{pypi_source}
 
 BuildArch:      noarch
+BuildRequires:  python3-devel
 BuildRequires:  pyproject-rpm-macros
 
 %description