diff --git a/_unittests/ut_loghelper/test_pypi_helper.py b/_unittests/ut_loghelper/test_pypi_helper.py
index 19b5d234..e119fd9a 100644
--- a/_unittests/ut_loghelper/test_pypi_helper.py
+++ b/_unittests/ut_loghelper/test_pypi_helper.py
@@ -12,12 +12,14 @@
         "this file should not be imported in that location: " +
         os.path.abspath(__file__))
 
-from pyquickhelper.loghelper import fLOG
-from pyquickhelper.loghelper import enumerate_pypi_versions_date
+from pyquickhelper.pycode import ExtTestCase, skipif_circleci, skipif_appveyor
+from pyquickhelper.loghelper import fLOG, enumerate_pypi_versions_date
 
 
 class TestPypiHelper(unittest.TestCase):
 
+    @skipif_circleci("connectivity issue")
+    @skipif_appveyor("connectivity issue")
     def test_clone_repo(self):
         fLOG(
             __file__,
diff --git a/_unittests/ut_sphinxext/test_gdot_extension.py b/_unittests/ut_sphinxext/test_gdot_extension.py
index 1df111af..c2d1cd53 100644
--- a/_unittests/ut_sphinxext/test_gdot_extension.py
+++ b/_unittests/ut_sphinxext/test_gdot_extension.py
@@ -85,6 +85,25 @@ def test_gdot3_svg(self):
         self.assertIn("document.getElementById('gdot-", content)
         self.assertIn('foo {\\n  \\"bar\\" -> \\"baz\\";\\n}");', content)
 
+    def test_gdot3_svg_process(self):
+        content = """
+                    before
+
+                    .. gdot::
+                        :format: svg
+                        :process:
+
+                        digraph foo {
+                          "bar" -> "baz";
+                        }
+
+                    after
+                    """.replace("                    ", "")
+
+        content = rst2html(content, writer="html", keep_warnings=True)
+        self.assertIn("document.getElementById('gdot-", content)
+        self.assertIn('foo {\\n  \\"bar\\" -> \\"baz\\";\\n}");', content)
+
     def test_gdot4_png(self):
         content = """
                     before
diff --git a/src/pyquickhelper/sphinxext/sphinx_gdot_extension.py b/src/pyquickhelper/sphinxext/sphinx_gdot_extension.py
index 515a730c..be69af6b 100644
--- a/src/pyquickhelper/sphinxext/sphinx_gdot_extension.py
+++ b/src/pyquickhelper/sphinxext/sphinx_gdot_extension.py
@@ -34,6 +34,7 @@ class GDotDirective(Directive):
     * *script*: boolean or a string to indicate than the standard output
         should only be considered after this substring
     * *url*: url to :epkg:`viz.js`, only if format *SVG* is selected
+    * *process*: run the script in an another process
 
     Example::
 
@@ -54,7 +55,8 @@ class GDotDirective(Directive):
     The directive also accepts scripts producing
     dot graphs on the standard output. Option *script*
     must be specified. This extension loads
-    `sphinx.ext.graphviz <https://www.sphinx-doc.org/en/master/usage/extensions/graphviz.html>`_
+    `sphinx.ext.graphviz <https://www.sphinx-doc.org/
+    en/master/usage/extensions/graphviz.html>`_
     if not added to the list of extensions:
 
     Example::
@@ -82,6 +84,7 @@ class GDotDirective(Directive):
         'format': directives.unchanged,
         'script': directives.unchanged,
         'url': directives.unchanged,
+        'process': directives.unchanged,
     }
 
     _default_url = "http://www.xavierdupre.fr/js/vizjs/viz.js"
@@ -96,6 +99,8 @@ def run(self):
         else:
             format = '?'
         url = self.options.get('url', 'local')
+        bool_set_ = (True, 1, "True", "1", "true", '')
+        process = 'process' in self.options and self.options['process'] in bool_set_
         if url == 'local':
             try:
                 import jyquickhelper
@@ -139,7 +144,7 @@ def run(self):
         # executes script if any
         content = "\n".join(self.content)
         if script or script == '':
-            stdout, stderr, _ = run_python_script(content)
+            stdout, stderr, _ = run_python_script(content, process=process)
             if stderr:
                 raise RuntimeError(
                     "A graph cannot be draw due to {}".format(stderr))