diff --git a/packages/j/jboss-websocket-1.0-api/.files b/packages/j/jboss-websocket-1.0-api/.files
index db9d420a325..e2b3f133a7b 100644
Binary files a/packages/j/jboss-websocket-1.0-api/.files and b/packages/j/jboss-websocket-1.0-api/.files differ
diff --git a/packages/j/jboss-websocket-1.0-api/.rev b/packages/j/jboss-websocket-1.0-api/.rev
index a87ba043152..98bd2086565 100644
--- a/packages/j/jboss-websocket-1.0-api/.rev
+++ b/packages/j/jboss-websocket-1.0-api/.rev
@@ -15,4 +15,12 @@
     <comment>Build with source/target levels 8</comment>
     <requestid>963929</requestid>
   </revision>
+  <revision rev="3" vrev="3">
+    <srcmd5>efbd24b5ac593fec8f803aa18dcabd7c</srcmd5>
+    <version>1.0.0</version>
+    <time>1694344239</time>
+    <user>anag+factory</user>
+    <comment>Reproducible builds improvement</comment>
+    <requestid>1109968</requestid>
+  </revision>
 </revisionlist>
diff --git a/packages/j/jboss-websocket-1.0-api/jboss-websocket-1.0-api.changes b/packages/j/jboss-websocket-1.0-api/jboss-websocket-1.0-api.changes
index dbf7dc4e44b..1d2f1235fce 100644
--- a/packages/j/jboss-websocket-1.0-api/jboss-websocket-1.0-api.changes
+++ b/packages/j/jboss-websocket-1.0-api/jboss-websocket-1.0-api.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Sat Sep  9 14:18:52 UTC 2023 - Fridrich Strba <fstrba@suse.com>
+
+- Reproducible builds: use SOURCE_DATE_EPOCH for timestamp
+
 -------------------------------------------------------------------
 Tue Mar 22 12:29:54 UTC 2022 - Fridrich Strba <fstrba@suse.com>
 
diff --git a/packages/j/jboss-websocket-1.0-api/jboss-websocket-1.0-api.spec b/packages/j/jboss-websocket-1.0-api/jboss-websocket-1.0-api.spec
index 497b7382ea5..c3b4dd535ad 100644
--- a/packages/j/jboss-websocket-1.0-api/jboss-websocket-1.0-api.spec
+++ b/packages/j/jboss-websocket-1.0-api/jboss-websocket-1.0-api.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package jboss-websocket-1.0-api
 #
-# 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
@@ -50,8 +50,9 @@ This package contains the API documentation for %{name}.
 %build
 %{mvn_alias} "org.jboss.spec.javax.websocket:jboss-websocket-api_1.0_spec" "javax.websocket:javax.websocket-api" "javax.websocket:javax.websocket-client-api"
 %{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 \
+    -Dmaven.compiler.release=8 \
 %endif
     -Dsource=8