diff --git a/jsonp.changes b/jsonp.changes
index 058d72b..35b18d5 100644
--- a/jsonp.changes
+++ b/jsonp.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Sat Sep  9 14:33:59 UTC 2023 - Fridrich Strba <fstrba@suse.com>
+
+- Reproducible builds: use SOURCE_DATE_EPOCH for timestamp
+
 -------------------------------------------------------------------
 Tue Mar 22 15:22:01 UTC 2022 - Fridrich Strba <fstrba@suse.com>
 
diff --git a/jsonp.spec b/jsonp.spec
index 4106914..f6af089 100644
--- a/jsonp.spec
+++ b/jsonp.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package jsonp
 #
-# 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
@@ -87,6 +87,7 @@ sed -i '/check-module/d' api/pom.xml impl/pom.xml
 %build
 
 %{mvn_build} -f -- \
+    -Dproject.build.outputTimestamp=$(date -u -d @${SOURCE_DATE_EPOCH:-$(date +%%s)} +%%Y-%%m-%%dT%%H:%%M:%%SZ) \
 %if %{?pkg_vcmp:%pkg_vcmp java-devel >= 9}%{!?pkg_vcmp:0}
     -Dmaven.compiler.release=8 \
 %endif