diff --git a/miniwdl-plugins/s3upload/miniwdl_s3upload.py b/miniwdl-plugins/s3upload/miniwdl_s3upload.py
index 0b6cd38c..06719e51 100644
--- a/miniwdl-plugins/s3upload/miniwdl_s3upload.py
+++ b/miniwdl-plugins/s3upload/miniwdl_s3upload.py
@@ -75,7 +75,7 @@ def flag_temporary(s3uri):
         Tagging={
             'TagSet': [
                 {
-                    'Key': 'swipe_temporary',
+                    'Key': 'intermediate_output',
                     'Value': 'true'
                 },
             ]
@@ -93,7 +93,7 @@ def remove_temporary_flag(s3uri, retry=0):
     )
     remaining_tags = []
     for tag in tags["TagSet"]:
-        if not (tag["Key"] == "swipe_temporary" and tag["Value"] == "true"):
+        if not (tag["Key"] == "intermediate_output" and tag["Value"] == "true"):
             remaining_tags.append(tag)
     try:
         if remaining_tags:
@@ -219,7 +219,7 @@ def task(cfg, logger, run_id, run_dir, task, **recv):
     recv = yield recv
 
     def upload_file(abs_fn, s3uri):
-        s3cp(logger, abs_fn, s3uri)
+        s3cp(logger, abs_fn, s3uri, flag_temporary_file=True)
         # record in _uploaded_files (keyed by inode, so that it can be found from any
         # symlink or hardlink)
         with _uploaded_files_lock:
@@ -339,13 +339,18 @@ def rewriter(fd):
         elif output_file and output_file.startswith("s3://"):
             remove_temporary_flag(output_file)
 
-    s3cp(logger, fn, os.environ.get("WDL_OUTPUT_URI", os.path.join(s3prefix, "outputs.s3.json")))
+    s3cp(
+        logger,
+        fn,
+        os.environ.get("WDL_OUTPUT_URI", os.path.join(s3prefix, "outputs.s3.json")),
+        flag_temporary_file=False
+    )
 
 
 _s3parcp_lock = threading.Lock()
 
 
-def s3cp(logger, fn, s3uri):
+def s3cp(logger, fn, s3uri, flag_temporary_file=False):
     with _s3parcp_lock:
         # when uploading many small outputs from the same pipeline you end up with a
         #   quick intense burst of load that can bump into the S3 rate limit
@@ -363,4 +368,5 @@ def s3cp(logger, fn, s3uri):
                 )
             )
             raise WDL.Error.RuntimeError("failed: " + " ".join(cmd))
-        flag_temporary(s3uri)
+        if flag_temporary_file:
+            flag_temporary(s3uri)
diff --git a/test/test_wdl.py b/test/test_wdl.py
index 335633c0..419a7331 100644
--- a/test/test_wdl.py
+++ b/test/test_wdl.py
@@ -441,7 +441,7 @@ def test_temp_tag(self):
           Key=f"{output_prefix}/test-temp-1/temporary.txt"
         ).get("TagSet", [])
         self.assertEqual(len(temporary_tagset), 1)
-        self.assertEqual(temporary_tagset[0].get("Key"), "swipe_temporary")
+        self.assertEqual(temporary_tagset[0].get("Key"), "intermediate_output")
         self.assertEqual(temporary_tagset[0].get("Value"), "true")
 
         # test temporary tag got removed for output file
diff --git a/version b/version
index 9bdb566f..c432e90f 100644
--- a/version
+++ b/version
@@ -1 +1 @@
-v1.4.1
\ No newline at end of file
+v1.4.2