diff --git a/src/zbmath_rest2oai/getAsXml.py b/src/zbmath_rest2oai/getAsXml.py
index 948939c0..d7e7c5b5 100644
--- a/src/zbmath_rest2oai/getAsXml.py
+++ b/src/zbmath_rest2oai/getAsXml.py
@@ -77,6 +77,11 @@ def datacite_records(result: dict) -> bool:
     return False
 
 
+def software_codemeta(result: dict) -> bool:
+    src = result.get("source_code", {})
+    return bool(src)
+
+
 def extract_tags(result):
     tags = []
     for msc in result.get('msc', []):
@@ -96,6 +101,9 @@ def extract_tags(result):
     if add_software(result):
         tags.append('openaire')
 
+    if software_codemeta(result):
+        tags.append('SWH')
+
     if datacite_records(result):
         tags.append('datacite')
 
diff --git a/src/zbmath_rest2oai/get_sets.py b/src/zbmath_rest2oai/get_sets.py
index 9121ccf0..97e2e439 100644
--- a/src/zbmath_rest2oai/get_sets.py
+++ b/src/zbmath_rest2oai/get_sets.py
@@ -15,6 +15,10 @@ def get_sets():
         'datacite': (
             'Datacite: for metadata supported with Doi and '
             'arXiv identifiers'
+        ),
+        'SWH': (
+            'Required set for Software Heritage: includes all entries that provide '
+            'software artifacts with accessible source code.'
         )
     }
 
diff --git a/test/test_get_sets.py b/test/test_get_sets.py
index 3140293d..2554b971 100644
--- a/test/test_get_sets.py
+++ b/test/test_get_sets.py
@@ -7,5 +7,5 @@ class PlainXmlTest(unittest.TestCase):
     @staticmethod
     def test_getSets():
         real_sets = get_sets()
-        assert len(real_sets) == 66
+        assert len(real_sets) == 67
         assert real_sets['14'] == '14-XX:Algebraic geometry'