diff --git a/proton.patch b/proton.patch
index e0fab7b..e686f52 100644
--- a/proton.patch
+++ b/proton.patch
@@ -14,7 +14,7 @@ diff -rc qpid-proton-0.40.0.orig/CMakeLists.txt qpid-proton-0.40.0/CMakeLists.tx
   if (NOT DEFINED Python_FIND_FRAMEWORK)
     set(Python_FIND_FRAMEWORK "LAST")
   endif ()
-! find_package(Python 3.13
+! find_package(Python 3.12
           REQUIRED COMPONENTS Interpreter
           OPTIONAL_COMPONENTS Development)
   
diff --git a/qpid-proton.spec b/qpid-proton.spec
index eb0d100..627d0ca 100644
--- a/qpid-proton.spec
+++ b/qpid-proton.spec
@@ -8,7 +8,7 @@
 
 Name:           qpid-proton
 Version:        0.40.0
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        A high performance, lightweight messaging library
 # Automatically converted from old format: ASL 2.0 - review is highly recommended.
 License:        Apache-2.0
@@ -309,6 +309,9 @@ rm -f  %{buildroot}%{proton_datadir}/CMakeLists.txt
 %check
 
 %changelog
+* Thu Dec 05 2024 Hirotaka Wakabayashi <hiwkby@yahoo.com> - 0.40.0-3
+- Downgrade Python version
+
 * Wed Dec 04 2024 Hirotaka Wakabayashi <hiwkby@yahoo.com> - 0.40.0-2
 - Update licenses.xml