diff --git a/netty.changes b/netty.changes
index 619cca6..678e72e 100644
--- a/netty.changes
+++ b/netty.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Sep 13 04:55:29 UTC 2023 - Fridrich Strba <fstrba@suse.com>
+
+- Reproducible builds: use SOURCE_DATE_EPOCH for timestamp
+
 -------------------------------------------------------------------
 Fri Jun 23 08:44:41 UTC 2023 - Fridrich Strba <fstrba@suse.com>
 
diff --git a/netty.spec b/netty.spec
index 2307db6..e3093bb 100644
--- a/netty.spec
+++ b/netty.spec
@@ -233,7 +233,9 @@ unzip %{SOURCE2} -d transport-native-unix-common/target/netty-jni-util
 
 %build
 
-%{mvn_build} -f -- -Dsource=8
+%{mvn_build} -f -- \
+    -Dproject.build.outputTimestamp=$(date -u -d @${SOURCE_DATE_EPOCH:-$(date +%%s)} +%%Y-%%m-%%dT%%H:%%M:%%SZ) \
+    -Dsource=8
 
 %install
 %mvn_install