diff --git a/apache-commons-math.changes b/apache-commons-math.changes
index d988035..1bddf0b 100644
--- a/apache-commons-math.changes
+++ b/apache-commons-math.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Sat Sep  9 09:14:09 UTC 2023 - Fridrich Strba <fstrba@suse.com>
+
+- Reproducible builds: use SOURCE_DATE_EPOCH for timestamp
+
 -------------------------------------------------------------------
 Sun Jun 19 14:16:56 UTC 2022 - Michael Calmer <mc@suse.com>
 
diff --git a/apache-commons-math.spec b/apache-commons-math.spec
index 1701048..d40ac90 100644
--- a/apache-commons-math.spec
+++ b/apache-commons-math.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package apache-commons-math
 #
-# Copyright (c) 2022 SUSE LLC
+# Copyright (c) 2023 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -50,7 +50,9 @@ This package contains the API documentation for %{name}.
 %pom_remove_plugin :build-helper-maven-plugin
 
 %build
-%mvn_build -f -- -Dmaven.compiler.source=1.8 -Dmaven.compiler.target=1.8
+%mvn_build -f -- \
+    -Dproject.build.outputTimestamp=$(date -u -d @${SOURCE_DATE_EPOCH:-$(date +%%s)} +%%Y-%%m-%%dT%%H:%%M:%%SZ) \
+    -Dmaven.compiler.source=1.8 -Dmaven.compiler.target=1.8
 
 %install
 %mvn_install