diff --git a/docs/lz4.rst b/docs/lz4.rst
index f95ff269..be058f5a 100644
--- a/docs/lz4.rst
+++ b/docs/lz4.rst
@@ -12,6 +12,5 @@ Contents
     :members:
        library_version_number,
        library_version_string,
-       lz4version,
        version
 
diff --git a/lz4/__init__.py b/lz4/__init__.py
index 10eaff72..69da37eb 100644
--- a/lz4/__init__.py
+++ b/lz4/__init__.py
@@ -6,12 +6,3 @@
     library_version_number,
     library_version_string,
 )
-
-from deprecation import deprecated
-
-@deprecated(deprecated_in="0.14", removed_in="1.0",
-            # See https://github.com/briancurtin/deprecation/issues/9
-            # current_version=__version__,
-            details="Use the lz4.library_version_number function instead")
-def lz4version():
-    return library_version_number()
diff --git a/lz4/frame/__init__.py b/lz4/frame/__init__.py
index fecfc6f8..28e8e45a 100644
--- a/lz4/frame/__init__.py
+++ b/lz4/frame/__init__.py
@@ -1,4 +1,3 @@
-import deprecation
 import lz4
 import io
 import os
@@ -285,20 +284,6 @@ def flush(self):
         self._started = False
         return result
 
-    @deprecation.deprecated(deprecated_in='0.23.1', removed_in='1.0',
-                            current_version=lz4.__version__,
-                            details='Use the LZ4FrameCompressor.flush() method'
-                            'instead')
-    def finalize(self):
-        """This function is identical to `LZ4FrameCompressor.flush()`.
-
-        This is provided for backwards compatibility only. You should migrate
-        your code to use `LZ4FrameCompressor.flush()`.
-
-        """
-        result = self.flush()
-        return result
-
     def reset(self):
         """Reset the `LZ4FrameCompressor` instance.
 
diff --git a/setup.py b/setup.py
index ac065d83..7dbc2331 100644
--- a/setup.py
+++ b/setup.py
@@ -123,9 +123,8 @@
                      include_dirs=include_dirs,
 )
 
-install_requires=[
-    'deprecation',
-]
+install_requires=[]
+
 # On Python earlier than 3.0 the builtins package isn't included, but it is
 # provided by the future package
 if sys.version_info < (3, 0):