diff --git a/docs/usage/api.rst b/docs/usage/api.rst
index 8e8ca90..6b81b6c 100644
--- a/docs/usage/api.rst
+++ b/docs/usage/api.rst
@@ -15,9 +15,9 @@ API overview
     :param flags: (optional). defaults to ``0``
     :param dont_inherit: (optional). defaults to ``False``
     :param policy: (optional). defaults to ``RestrictingNodeTransformer``
-    :type source: str or unicode text or ``ast.AST``
-    :type filename: str or unicode text
-    :type mode: str or unicode text
+    :type source: str or bytes or bytearray or ``ast.Module`` or ``ast.Expression`` or ``ast.Interactive``
+    :type filename: str or bytes or os.PathLike[typing.Any]
+    :type mode: str
     :type flags: int
     :type dont_inherit: int
     :type policy: RestrictingNodeTransformer class
diff --git a/src/RestrictedPython/compile.py b/src/RestrictedPython/compile.py
index 3253b8c..f1b78cc 100644
--- a/src/RestrictedPython/compile.py
+++ b/src/RestrictedPython/compile.py
@@ -39,13 +39,19 @@ def _compile_restricted_mode(
                             dont_inherit=dont_inherit)
     elif issubclass(policy, RestrictingNodeTransformer):
         c_ast = None
-        allowed_source_types = [str, ast.Module]
+        allowed_source_types = [
+            str,
+            bytes,
+            bytearray,
+            ast.Module,
+            ast.Expression,
+            ast.Interactive]
         if not issubclass(type(source), tuple(allowed_source_types)):
             raise TypeError('Not allowed source type: '
                             '"{0.__class__.__name__}".'.format(source))
         c_ast = None
         # workaround for pypy issue https://bitbucket.org/pypy/pypy/issues/2552
-        if isinstance(source, ast.Module):
+        if isinstance(source, (ast.Module, ast.Expression, ast.Interactive)):
             c_ast = source
         else:
             try: