diff --git a/pygobject3.spec b/pygobject3.spec
index e5954cf..893797c 100644
--- a/pygobject3.spec
+++ b/pygobject3.spec
@@ -6,7 +6,7 @@
 
 Name:           pygobject3
 Version:        3.42.0
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Python bindings for GObject Introspection
 
 # pygobject3 emits an ImportWarning with Pyuthon 3.10.0b1+
@@ -26,6 +26,10 @@ BuildRequires:  python3-devel >= %{python3_version}
 BuildRequires:  python3-cairo-devel >= %{pycairo_version}
 BuildRequires:  python3-setuptools
 
+# https://docs.fedoraproject.org/en-US/packaging-guidelines/Python_Appendix/#_byte_compilation_reproducibility
+%global py_reproducible_pyc_path %{buildroot}%{python3_sitelib}
+BuildRequires:  /usr/bin/marshalparser
+
 Patch10001:     0001-IntrospectionModule-handle-two-threads-loading-type-.patch
 
 %description
@@ -90,6 +94,10 @@ This package contains files required to embed PyGObject
 %{_libdir}/pkgconfig/pygobject-3.0.pc
 
 %changelog
+* Mon Feb 07 2022 Miro Hrončok <mhroncok@redhat.com> - 3.42.0-4
+- Ensure Python bytecode installed in multilib packages is bit-to-bit identical
+  Related: rhbz#1915764
+
 * Fri Jan 21 2022 Fedora Release Engineering <releng@fedoraproject.org> - 3.42.0-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_36_Mass_Rebuild