diff --git a/docs/source/conf.py b/docs/source/conf.py
index 841a8916..a1c6f26e 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -106,7 +106,7 @@ def run_apidoc(app):
     source_dir = Path(os.path.abspath(__file__)).parent
     apidoc_dir = source_dir / 'apidoc'
     apidoc_dir.mkdir(exist_ok=True)
-    package_dir = source_dir.parent.parent / 'plumpy'
+    package_dir = source_dir.parent.parent / 'src' / 'plumpy'
 
     # we write to a temporary folder first then only move across files that have changed
     # this ensures that document rebuilds are not triggered every time (due to change in file mtime)
diff --git a/plumpy/__init__.py b/src/plumpy/__init__.py
similarity index 100%
rename from plumpy/__init__.py
rename to src/plumpy/__init__.py
diff --git a/plumpy/base/__init__.py b/src/plumpy/base/__init__.py
similarity index 100%
rename from plumpy/base/__init__.py
rename to src/plumpy/base/__init__.py
diff --git a/plumpy/base/state_machine.py b/src/plumpy/base/state_machine.py
similarity index 100%
rename from plumpy/base/state_machine.py
rename to src/plumpy/base/state_machine.py
diff --git a/plumpy/base/utils.py b/src/plumpy/base/utils.py
similarity index 100%
rename from plumpy/base/utils.py
rename to src/plumpy/base/utils.py
diff --git a/plumpy/communications.py b/src/plumpy/communications.py
similarity index 100%
rename from plumpy/communications.py
rename to src/plumpy/communications.py
diff --git a/plumpy/events.py b/src/plumpy/events.py
similarity index 100%
rename from plumpy/events.py
rename to src/plumpy/events.py
diff --git a/plumpy/exceptions.py b/src/plumpy/exceptions.py
similarity index 100%
rename from plumpy/exceptions.py
rename to src/plumpy/exceptions.py
diff --git a/plumpy/futures.py b/src/plumpy/futures.py
similarity index 100%
rename from plumpy/futures.py
rename to src/plumpy/futures.py
diff --git a/plumpy/lang.py b/src/plumpy/lang.py
similarity index 100%
rename from plumpy/lang.py
rename to src/plumpy/lang.py
diff --git a/plumpy/loaders.py b/src/plumpy/loaders.py
similarity index 100%
rename from plumpy/loaders.py
rename to src/plumpy/loaders.py
diff --git a/plumpy/mixins.py b/src/plumpy/mixins.py
similarity index 100%
rename from plumpy/mixins.py
rename to src/plumpy/mixins.py
diff --git a/plumpy/persistence.py b/src/plumpy/persistence.py
similarity index 100%
rename from plumpy/persistence.py
rename to src/plumpy/persistence.py
diff --git a/plumpy/ports.py b/src/plumpy/ports.py
similarity index 100%
rename from plumpy/ports.py
rename to src/plumpy/ports.py
diff --git a/plumpy/process_comms.py b/src/plumpy/process_comms.py
similarity index 100%
rename from plumpy/process_comms.py
rename to src/plumpy/process_comms.py
diff --git a/plumpy/process_listener.py b/src/plumpy/process_listener.py
similarity index 100%
rename from plumpy/process_listener.py
rename to src/plumpy/process_listener.py
diff --git a/plumpy/process_spec.py b/src/plumpy/process_spec.py
similarity index 100%
rename from plumpy/process_spec.py
rename to src/plumpy/process_spec.py
diff --git a/plumpy/process_states.py b/src/plumpy/process_states.py
similarity index 100%
rename from plumpy/process_states.py
rename to src/plumpy/process_states.py
diff --git a/plumpy/processes.py b/src/plumpy/processes.py
similarity index 100%
rename from plumpy/processes.py
rename to src/plumpy/processes.py
diff --git a/plumpy/py.typed b/src/plumpy/py.typed
similarity index 100%
rename from plumpy/py.typed
rename to src/plumpy/py.typed
diff --git a/plumpy/settings.py b/src/plumpy/settings.py
similarity index 100%
rename from plumpy/settings.py
rename to src/plumpy/settings.py
diff --git a/plumpy/utils.py b/src/plumpy/utils.py
similarity index 100%
rename from plumpy/utils.py
rename to src/plumpy/utils.py
diff --git a/plumpy/workchains.py b/src/plumpy/workchains.py
similarity index 100%
rename from plumpy/workchains.py
rename to src/plumpy/workchains.py