diff --git a/HISTORY.rst b/HISTORY.rst
index d6f77377b..fc09b1110 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -3,6 +3,15 @@
 Release History
 ---------------
 
+1.1.1 (2019-04-16)
+++++++++++++++++++++++
+
+**Improvements**
+
+- Jupytext server extension leaves the contents manager unchanged when it is already a subclass of TextFileContentsManager (#218)
+- The base class for TextFileContentsManager defaults to FileContentsManager when LargeFileManager is not available (#217)
+
+
 1.1.0 (2019-04-14)
 ++++++++++++++++++++++
 
diff --git a/jupytext/__init__.py b/jupytext/__init__.py
index 4d966e728..fd26deef0 100644
--- a/jupytext/__init__.py
+++ b/jupytext/__init__.py
@@ -11,15 +11,15 @@ class TextFileContentsManager:
         """A class that raises the previous ImportError"""
         err = err
 
-        def __init__(self):
+        def __init__(self, parent=None, log=None):  # noqa
             raise self.err
 
 
 def load_jupyter_server_extension(app):  # pragma: no cover
     """Use Jupytext's contents manager"""
-    if app.contents_manager_class == TextFileContentsManager:
+    if isinstance(app.contents_manager_class, TextFileContentsManager):
         app.log.info("[Jupytext Server Extension] NotebookApp.contents_manager_class is "
-                     "jupytext.TextFileContentsManager already - OK")
+                     "(a subclass of) jupytext.TextFileContentsManager already - OK")
         return
 
     # The server extension call is too late!
diff --git a/jupytext/contentsmanager.py b/jupytext/contentsmanager.py
index cd3c09ac4..659e2b27e 100644
--- a/jupytext/contentsmanager.py
+++ b/jupytext/contentsmanager.py
@@ -14,7 +14,12 @@
 except ImportError:
     pass
 
-from notebook.services.contents.largefilemanager import LargeFileManager
+try:
+    from notebook.services.contents.largefilemanager import LargeFileManager
+except ImportError:
+    # Older versions of notebook do not have the LargeFileManager #217
+    from notebook.services.contents.filemanager import FileContentsManager as LargeFileManager
+
 from jupyter_client.kernelspec import find_kernel_specs, get_kernel_spec
 
 from .jupytext import reads, writes, create_prefix_dir
diff --git a/jupytext/version.py b/jupytext/version.py
index a5567ef6d..6da904d80 100644
--- a/jupytext/version.py
+++ b/jupytext/version.py
@@ -1,3 +1,3 @@
 """Jupytext's version number"""
 
-__version__ = '1.1.0'
+__version__ = '1.1.1'