diff --git a/packages/h/hppc/.files b/packages/h/hppc/.files
index 73cb6b4c923..d303734f593 100644
Binary files a/packages/h/hppc/.files and b/packages/h/hppc/.files differ
diff --git a/packages/h/hppc/.rev b/packages/h/hppc/.rev
index d36285e2b61..d0aa7be71aa 100644
--- a/packages/h/hppc/.rev
+++ b/packages/h/hppc/.rev
@@ -23,4 +23,12 @@
     <comment>Standalone JavaEE inconditionally</comment>
     <requestid>965948</requestid>
   </revision>
+  <revision rev="4" vrev="4">
+    <srcmd5>9e4a4173eb85cf7999e842d55eb2f1a2</srcmd5>
+    <version>0.7.1</version>
+    <time>1694808309</time>
+    <user>anag+factory</user>
+    <comment>reproducible</comment>
+    <requestid>1111421</requestid>
+  </revision>
 </revisionlist>
diff --git a/packages/h/hppc/hppc-timestamp.patch b/packages/h/hppc/hppc-timestamp.patch
new file mode 100644
index 00000000000..1e9b251346e
--- /dev/null
+++ b/packages/h/hppc/hppc-timestamp.patch
@@ -0,0 +1,15 @@
+--- hppc-0.7.1/hppc-template-processor/src/main/java/com/carrotsearch/hppc/generator/TemplateOptions.java	2015-05-07 09:32:26.000000000 +0200
++++ hppc-0.7.1/hppc-template-processor/src/main/java/com/carrotsearch/hppc/generator/TemplateOptions.java	2023-09-14 16:19:35.996103476 +0200
+@@ -88,7 +88,11 @@
+    */
+   public String getTimeNow() {
+     SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ", Locale.ROOT);
+-    return format.format(new Date());
++    Date now = new Date();
++    if (System.getenv("SOURCE_DATE_EPOCH") != null) {
++      now = new Date(1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH")));
++    }
++    return format.format(now);
+   }
+ 
+   public String getTemplateFile() {
diff --git a/packages/h/hppc/hppc.changes b/packages/h/hppc/hppc.changes
index a370d8a1bfb..a357aef6495 100644
--- a/packages/h/hppc/hppc.changes
+++ b/packages/h/hppc/hppc.changes
@@ -1,3 +1,15 @@
+-------------------------------------------------------------------
+Thu Sep 14 15:27:47 UTC 2023 - Fridrich Strba <fstrba@suse.com>
+
+- Added patch:
+  * hppc-timestamp.patch
+    + use SOURCE_DATE_EPOCH for timestamp in generated files
+
+-------------------------------------------------------------------
+Wed Sep 13 06:30:04 UTC 2023 - Fridrich Strba <fstrba@suse.com>
+
+- Reproducible builds: use SOURCE_DATE_EPOCH for timestamp
+
 -------------------------------------------------------------------
 Wed Mar 30 10:24:48 UTC 2022 - Fridrich Strba <fstrba@suse.com>
 
diff --git a/packages/h/hppc/hppc.spec b/packages/h/hppc/hppc.spec
index aad329b01fb..20590d320dc 100644
--- a/packages/h/hppc/hppc.spec
+++ b/packages/h/hppc/hppc.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package hppc
 #
-# 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
@@ -24,6 +24,7 @@ License:        Apache-2.0
 Group:          Development/Libraries/Java
 URL:            https://labs.carrotsearch.com/hppc.html
 Source0:        https://github.com/carrotsearch/hppc/archive/%{version}.tar.gz
+Patch0:         hppc-timestamp.patch
 BuildRequires:  fdupes
 BuildRequires:  maven-local
 BuildRequires:  mvn(com.google.guava:guava)
@@ -63,6 +64,8 @@ This package contains javadoc for HPPC.
 
 %prep
 %setup -q
+%patch0 -p1
+
 find . -name "*.class" -print -delete
 find . -name "*.jar" -print -delete
 
@@ -89,7 +92,9 @@ done
 %{mvn_package} :%{name}-template-processor %{name}-templateprocessor
 
 %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