diff --git a/fdroidserver/publish.py b/fdroidserver/publish.py
index 41d70300..5e4ccbee 100644
--- a/fdroidserver/publish.py
+++ b/fdroidserver/publish.py
@@ -146,6 +146,9 @@ def status_update_json(generatedKeys, signedApks):
 
     logging.debug(_('Outputting JSON'))
     output = common.setup_status_output(start_timestamp)
+    output['apksigner'] = shutil.which(config.get('apksigner', ''))
+    output['jarsigner'] = shutil.which(config.get('jarsigner', ''))
+    output['keytool'] = shutil.which(config.get('keytool', ''))
     if generatedKeys:
         output['generatedKeys'] = generatedKeys
     if signedApks:
diff --git a/fdroidserver/update.py b/fdroidserver/update.py
index f34e8b0f..1cd94e47 100644
--- a/fdroidserver/update.py
+++ b/fdroidserver/update.py
@@ -144,6 +144,9 @@ def status_update_json(apps, apks):
     output['noPackages'] = []
     output['needsUpdate'] = []
     output['noUpdateCheck'] = []
+    output['apksigner'] = shutil.which(config.get('apksigner', ''))
+    output['jarsigner'] = shutil.which(config.get('jarsigner', ''))
+    output['keytool'] = shutil.which(config.get('keytool', ''))
 
     for appid in apps:
         app = apps[appid]
diff --git a/tests/publish.TestCase b/tests/publish.TestCase
index d0d08376..f57dc955 100755
--- a/tests/publish.TestCase
+++ b/tests/publish.TestCase
@@ -11,6 +11,7 @@
 #
 
 import inspect
+import json
 import logging
 import optparse
 import os
@@ -221,6 +222,34 @@ class PublishTest(unittest.TestCase):
             self.assertTrue(pk.is_decrypted())
             self.assertEqual(jks.util.RSA_ENCRYPTION_OID, pk.algorithm_oid)
 
+    def test_status_update_json(self):
+        common.config = {}
+        publish.config = {}
+        with tempfile.TemporaryDirectory() as tmpdir:
+            os.chdir(tmpdir)
+            with mock.patch('sys.argv', ['fdroid publish', '']):
+                publish.status_update_json([], [])
+                with open('repo/status/publish.json') as fp:
+                    data = json.load(fp)
+                self.assertTrue('apksigner' in data)
+
+                publish.config = {
+                    'apksigner': 'apksigner',
+                }
+                publish.status_update_json([], [])
+                with open('repo/status/publish.json') as fp:
+                    data = json.load(fp)
+                self.assertEqual(shutil.which(publish.config['apksigner']), data['apksigner'])
+
+                publish.config = {}
+                common.fill_config_defaults(publish.config)
+                publish.status_update_json([], [])
+                with open('repo/status/publish.json') as fp:
+                    data = json.load(fp)
+                self.assertEqual(publish.config.get('apksigner'), data['apksigner'])
+                self.assertEqual(publish.config['jarsigner'], data['jarsigner'])
+                self.assertEqual(publish.config['keytool'], data['keytool'])
+
 
 if __name__ == "__main__":
     os.chdir(os.path.dirname(__file__))
diff --git a/tests/update.TestCase b/tests/update.TestCase
index e84609bf..fbdccc5e 100755
--- a/tests/update.TestCase
+++ b/tests/update.TestCase
@@ -6,6 +6,7 @@ import copy
 import git
 import glob
 import inspect
+import json
 import logging
 import optparse
 import os
@@ -23,6 +24,7 @@ from binascii import unhexlify
 from datetime import datetime
 from distutils.version import LooseVersion
 from testcommon import TmpCwd
+from unittest import mock
 
 try:
     from yaml import CSafeLoader as SafeLoader
@@ -63,6 +65,7 @@ DONATION_FIELDS = (
 class Options:
     allow_disabled_algorithms = False
     clean = False
+    pretty = True
     rename_apks = False
 
 
@@ -1374,6 +1377,35 @@ class UpdateTest(unittest.TestCase):
         fdroidserver.update._set_author_entry(app, key, f)
         self.assertIsNone(app.get(key))
 
+    def test_status_update_json(self):
+        fdroidserver.common.config = {}
+        fdroidserver.update.config = {}
+        fdroidserver.update.options = Options
+        with tempfile.TemporaryDirectory() as tmpdir:
+            os.chdir(tmpdir)
+            with mock.patch('sys.argv', ['fdroid update', '']):
+                fdroidserver.update.status_update_json([], [])
+                with open('repo/status/update.json') as fp:
+                    data = json.load(fp)
+                self.assertTrue('apksigner' in data)
+
+                fdroidserver.update.config = {
+                    'apksigner': 'apksigner',
+                }
+                fdroidserver.update.status_update_json([], [])
+                with open('repo/status/update.json') as fp:
+                    data = json.load(fp)
+                self.assertEqual(shutil.which(fdroidserver.update.config['apksigner']), data['apksigner'])
+
+                fdroidserver.update.config = {}
+                fdroidserver.common.fill_config_defaults(fdroidserver.update.config)
+                fdroidserver.update.status_update_json([], [])
+                with open('repo/status/update.json') as fp:
+                    data = json.load(fp)
+                self.assertEqual(fdroidserver.update.config.get('apksigner'), data['apksigner'])
+                self.assertEqual(fdroidserver.update.config['jarsigner'], data['jarsigner'])
+                self.assertEqual(fdroidserver.update.config['keytool'], data['keytool'])
+
 
 if __name__ == "__main__":
     os.chdir(os.path.dirname(__file__))