diff --git a/python-rpm-generators.spec b/python-rpm-generators.spec
index 398167752f5bd86993098c0abddba25ddda9e6f8..f29da37fe5ba98f47efe69164f5ad1b33589db6a 100644
--- a/python-rpm-generators.spec
+++ b/python-rpm-generators.spec
@@ -2,7 +2,7 @@
 
 Name: python-rpm-generators
 Version: 9
-Release: 3
+Release: 4
 Summary: Dependency generators for Python RPMs
 
 License: GPLv2+
@@ -44,6 +44,9 @@ install -Dpm0755 -t %{buildroot}%{_rpmconfigdir} pythondeps.sh pythondistdeps.py
 %{_rpmconfigdir}/pythondistdeps.py
 
 %changelog
+* Sun Apr 23 2023 caodongxia <caodongxia@h-partners.com> - 9-4
+- Fix the python3 version cannot be found when pyproject.toml is used for building
+
 * Thu Oct 27 2022 zhangruifang <zhangruifang1@h-partners.com> - 9-3
 - Rebuild for next release
 
diff --git a/pythondistdeps.py b/pythondistdeps.py
index 1d3535bde72f1128bd613ff25f874da71d34c5ee..eb91ac9f8f39779d1ad1f66e2779bd4a4413db53 100644
--- a/pythondistdeps.py
+++ b/pythondistdeps.py
@@ -116,7 +116,7 @@ for f in files:
             # Try to parse the Python version from the path the metadata
             # resides at (e.g. /usr/lib/pythonX.Y/site-packages/...)
             import re
-            res = re.search(r"/python(?P<pyver>\d+\.\d)/", path_item)
+            res = re.search(r"/python(?P<pyver>\d+\.\d+)/", path_item)
             if res:
                 dist.py_version = res.group('pyver')
             else: