diff --git a/reproducible-jar-mtime.patch b/reproducible-jar-mtime.patch
index deb7930..b4df609 100644
--- a/reproducible-jar-mtime.patch
+++ b/reproducible-jar-mtime.patch
@@ -1,5 +1,5 @@
 --- apache-ant-1.10.14/src/main/org/apache/tools/ant/taskdefs/Jar.java	2024-07-16 13:38:38.336428941 +0200
-+++ apache-ant-1.10.14/src/main/org/apache/tools/ant/taskdefs/Jar.java	2024-07-16 13:48:05.794045414 +0200
++++ apache-ant-1.10.14/src/main/org/apache/tools/ant/taskdefs/Jar.java	2024-07-16 14:33:49.541982462 +0200
 @@ -450,6 +450,13 @@
          serviceList.add(service);
      }
@@ -41,3 +41,28 @@
                            null, ZipFileSet.DEFAULT_FILE_MODE);
          }
      }
+--- apache-ant-1.10.14/src/main/org/apache/tools/ant/taskdefs/Zip.java	2024-07-16 13:38:38.343095619 +0200
++++ apache-ant-1.10.14/src/main/org/apache/tools/ant/taskdefs/Zip.java	2024-07-16 14:33:59.575332992 +0200
+@@ -1669,6 +1669,13 @@
+             extra);
+     }
+ 
++    private long currentTimeMillisOrSourceDateEpoch() {
++        if ( System.getenv("SOURCE_DATE_EPOCH") != null ) {
++            return 1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH"));
++        }
++        return System.currentTimeMillis();
++    }
++
+     /**
+      * Add a directory to the zip stream.
+      * @param dir  the directory to add to the archive
+@@ -1708,7 +1715,7 @@
+             } else if (dir != null && dir.isExists()) {
+                 ze.setTime(dir.getLastModified() + millisToAdd);
+             } else {
+-                ze.setTime(System.currentTimeMillis() + millisToAdd);
++                ze.setTime(currentTimeMillisOrSourceDateEpoch() + millisToAdd);
+             }
+             ze.setSize(0);
+             ze.setMethod(ZipEntry.STORED);