diff --git a/python3.9.spec b/python3.9.spec
index 000eab9..0be3357 100644
--- a/python3.9.spec
+++ b/python3.9.spec
@@ -17,7 +17,7 @@ URL: https://www.python.org/
 #global prerel ...
 %global upstream_version %{general_version}%{?prerel}
 Version: %{general_version}%{?prerel:~%{prerel}}
-Release: 2%{?dist}
+Release: 3%{?dist}
 License: Python
 
 
@@ -269,6 +269,7 @@ BuildRequires: valgrind-devel
 BuildRequires: xz-devel
 BuildRequires: zlib-devel
 
+BuildRequires: systemtap-sdt-devel
 BuildRequires: /usr/bin/dtrace
 
 # workaround http://bugs.python.org/issue19804 (test_uuid requires ifconfig)
@@ -1845,6 +1846,10 @@ CheckPython optimized
 # ======================================================
 
 %changelog
+* Mon Jun 23 2025 Tobias Urdin <tobias.urdin@binero.com> - 3.9.21-3
+- Add systemtap-sdt-devel build dependency
+Resolves: RHEL-99500
+
 * Mon Feb 10 2025 Charalampos Stratakis <cstratak@redhat.com> - 3.9.21-2
 - Security fix for CVE-2025-0938
 Resolves: RHEL-77263