diff --git a/packages/j/jnr-constants/.files b/packages/j/jnr-constants/.files
index 5763ada9c87..7aa977ae610 100644
Binary files a/packages/j/jnr-constants/.files and b/packages/j/jnr-constants/.files differ
diff --git a/packages/j/jnr-constants/.rev b/packages/j/jnr-constants/.rev
index 7699229deb2..12755fb7284 100644
--- a/packages/j/jnr-constants/.rev
+++ b/packages/j/jnr-constants/.rev
@@ -23,4 +23,12 @@
     <comment>0.10.4</comment>
     <requestid>1083174</requestid>
   </revision>
+  <revision rev="4" vrev="2">
+    <srcmd5>ce76469065af7fb4f793c61e948cad5d</srcmd5>
+    <version>0.10.4</version>
+    <time>1694344248</time>
+    <user>anag+factory</user>
+    <comment>Reproducible builds improvement</comment>
+    <requestid>1109978</requestid>
+  </revision>
 </revisionlist>
diff --git a/packages/j/jnr-constants/jnr-constants.changes b/packages/j/jnr-constants/jnr-constants.changes
index fbbae926a43..722556cbb94 100644
--- a/packages/j/jnr-constants/jnr-constants.changes
+++ b/packages/j/jnr-constants/jnr-constants.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Sat Sep  9 14:30:09 UTC 2023 - Fridrich Strba <fstrba@suse.com>
+
+- Reproducible builds: use SOURCE_DATE_EPOCH for timestamp
+
 -------------------------------------------------------------------
 Sun Dec 18 06:51:14 UTC 2022 - Anton Shvetz <shvetz.anton@gmail.com>
 
diff --git a/packages/j/jnr-constants/jnr-constants.spec b/packages/j/jnr-constants/jnr-constants.spec
index dea57edc30c..2fe5570603f 100644
--- a/packages/j/jnr-constants/jnr-constants.spec
+++ b/packages/j/jnr-constants/jnr-constants.spec
@@ -52,7 +52,8 @@ This package contains the API documentation for %{name}.
 %pom_remove_plugin :maven-javadoc-plugin
 
 %build
-%{mvn_build} -f
+%{mvn_build} -f -- \
+    -Dproject.build.outputTimestamp=$(date -u -d @${SOURCE_DATE_EPOCH:-$(date +%%s)} +%%Y-%%m-%%dT%%H:%%M:%%SZ)
 
 %install
 %mvn_install